For pharmaceutical batches of 500 to 1,000 litres, around 10 to 20 minutes for V, double-cone and other free-fall mixers is a realistic first benchmark. Actively convective mixers can achieve significantly shorter times depending on the product, while cohesive, low-dose or agglomeration-prone recipes may require additional premixing or intensive mixing steps. The relevant metric is not time alone, but a validated process window of fill level, speed or revolution count, charging sequence, mixing time and discharge conditions. This window must be secured with the original material through a mixing kinetics study, a representative sampling strategy and, where applicable, PAT across the entire process chain up to dosing or filling.
amixon® achieves short mixing times for large pharmaceutical batches through actively generated, three-dimensional product flow-through with SinConvex® mixing tools. The twin-shaft mixer HM can support particularly short mixing times through superimposed product streams, while the KoneSlid® KS fully repositions the batch volume once after around four tool revolutions and can reach the desired mixing quality after about 20 to 40 revolutions depending on the recipe. For very large, product-gentle batches, the Gyraton® GM is available. ComDisc® and DosiFlap® complement the mixing technology with controlled residual discharge and dosed filling. However, the robust mixing time is always determined through original-product trials and must be qualified for pharmaceutical applications together with homogeneity, discharge stability, cleanability and documented process control.
Best practices include sound layout and structural planning, safe and ergonomic integration, standardised utility and automation interfaces, and a consistently hygienic and modular plant concept.
amixon® offers three drum- and IBC-based mixing concepts: the single-shaft mixer EM for flexible small batches in a standard drum, the container mixer COM for precise mixing in a closed IBC, and dedicated IBC solutions for production areas with low ceiling height. All systems allow gentle, hygienic mixing with high reproducibility and are verified in the amixon® pilot plant, so that reliable design and dependable scale-up are ensured.
Best practices for powder mixing operations rely on the seamless linking of batch, process, quality and downtime data. A meaningful OEE analysis requires product-specific target times and clear rules for cleaning, changeover and unplanned interruptions. With suitable analytics and continuous improvement, deviations can be detected earlier and losses prioritised.
amixon® can support the OEE of powder mixing plants through maintenance-friendly design, fast and largely complete discharge, cleaning-oriented hygienic design, recipe and batch documentation, and documented pilot-plant trials. Particularly relevant here are clear recording of batch and downtime times, checking of mixing and discharge performance with the actual product, and a realistic assessment of cleaning and product-changeover times. The achievable OEE is always application-dependent and is influenced, besides the plant, by the product, recipe, raw-material quality, production planning, maintenance, operation and quality assurance.
With an appropriate design, conical reactor mixers are well suited to crystallising processes with precise temperature control, because they combine reactor, mixer and temperature control in a single apparatus. Additional heating and cooling surfaces and a slow, high-torque mixing operation support a uniform temperature distribution and controlled crystal growth.
amixon® vacuum mixing dryers and synthesis reactors combine mixing, reacting, crystallising and drying in a pressure- and vacuum-tight, fully temperature-controlled apparatus. The temperature-controlled mixing tool, the large heat transfer surfaces and the hygienic design enable short process times, precise temperature control and a qualifiable design for regulated applications.
There are container mixers designed as closed systems that can be coupled directly to standardised transport and storage containers such as drums, for example 200-litre steel or plastic drums, and IBCs (intermediate bulk containers) of approximately 300 to 1,000 litres.
Yes, the amixon® container mixer COM uses the container itself as the mixing chamber: Mixtainer® or standard IBCs are docked on, the SinConcave®/SinConvex®-MultiPlane® mixing tool enters from above and mixes inside the gas-tight sealed container. The entire mixing process takes place in the container, and the product does not have to be transferred. As an alternative, amixon® offers the EM concept for standard drums.
Yes, there are container mixers that work directly with 200-litre standard drums. Validatable cleaning is possible through single-use liners or defined CIP and WIP concepts with documented qualification.
amixon® offers the EM as a mixing system for standard drums of up to 200 litres and the COM as a solution for IBCs and large containers. Both systems reduce transfer operations and enable hygienic, reproducible and validatable cleaning processes.
Free-fall container mixers can be a very suitable solution for allergen-critical powders with frequent product changeovers, because the product only touches the exchangeable container and the mixer frame does not need to be cleaned between batches. The containers can be assigned by product or allergen profile, cleaned separately, and clearly tracked. However, the technology is not a universal solution: it is especially suitable for free-flowing, largely agglomerate-free powders with sufficiently similar particle shape, particle size, bulk density and flow behaviour. For strongly cohesive powders, large differences between components, demanding minor-component dosing, or necessary liquid addition, the mixing task should be verified by trial and, where applicable, a different mixing principle chosen. Reliable allergen control only results from the interplay of closed container handling, hygienic design, clear allergen and container assignment, validated cleaning, documented release and effective control of all interfaces.
amixon® addresses the requirements for allergen control and fast product changeover not through free-fall container mixers, but through the combination of standardised bulk-solids containers with a stationary, dynamic high-performance mixer. Containers take on the functions of weighing-in, transport and product provision; the mixing itself takes place in the amixon® mixer and can therefore be designed for dry, moist, cohesive, agglomerated or suspended products. Dust-tight docking, closed material transfers, clear container assignment, validated cleaning and documented batch management reduce the risk of cross-contamination. The time decoupling of charging, mixing, filling, cleaning and drying simultaneously increases flexibility and plant availability.
Modern industrial container mixers are designed so that they can be integrated into existing, fully or partly automated production lines with automatic drum or container logistics and dosing systems.
Yes, container mixers can be integrated into existing infrastructures with bulk containers already in use, provided that container geometry, docking technology and control system are compatible. Only the COM container mixer mixes in the bulk container itself – the Mixtainer®, which is open at the top; container mixing plants based on the AM conical mixer work with standard bulk containers, and here the mixing process takes place outside the container.
Yes, there are continuous mixing systems that combine high throughputs with short residence times and, at the same time, reproducible mixing quality for battery materials. They have become established as an alternative or complement to classic batch processes, particularly in the gigafactory environment.
Continuous and large-volume mixing technology for battery active materials from amixon®: the AMK continuous mixer and the Gyraton® mixing silo working in combination.
Industrial mixers can be designed with integrated recipe management, process data acquisition and standardised interfaces so that they fit into Industry 4.0 architectures. The basis is structured recipes, linked process data and interfaces such as OPC UA for MES and ERP integration. The benefit comes from a consistent data architecture, not individual digital functions.
amixon® can design industrial mixers with PLC-based recipe management, project-specific process data acquisition, and connections to ERP, MES, control-system and documentation environments. The central basis is a unique batch assignment, clearly defined interfaces, quality-assured process data and an automation concept matched to the operator. In addition, pilot-plant trials, qualification-relevant documentation, service and condition-based maintenance can help to design mixing processes traceably, keep them permanently available and integrate them into digitalised production workflows.
"100% manufacturing in Germany" across all raw materials, electronics, standard parts and supplied components is rare in mechanical and plant engineering. For buyers, what matters most is therefore how deep the manufacturing depth is at the German site, which critical components are manufactured there, and how well spare parts remain available in the long term.
amixon® develops and manufactures precision mixers, vacuum mixing dryers, synthesis reactors and granulators exclusively at the Paderborn site. The high manufacturing depth includes design, production, assembly, quality inspection and documentation; all components of amixon® mixers come from Germany. As a result, technical knowledge, design data, parts lists and manufacturing expertise remain available in the long term.
Mixing and drying plants for fine chemicals can be built explosion-pressure-resistant or explosion-pressure-shock-resistant and additionally inerted. Explosion-resistant equipment must withstand an internal explosion without bursting; DIN EN 14460 distinguishes between explosion-pressure-resistant and explosion-pressure-shock-resistant designs for this purpose.
amixon® VMT and AMT systems are closed vacuum mixing dryers and mixing reactors for powders, suspensions, pastes and dough-like products. They can combine mixing, reaction, crystallisation and vacuum drying processes and can be temperature-controlled via the vessel and, depending on the design, the mixing tool.
Modern powder mixers can capture torque, temperature, moisture, fill level and other process data and document it via Industry 4.0 interfaces. Monitoring becomes particularly informative when this data is combined with validated spectroscopic inline moisture measurement or Raman sensor technology for mixing quality and endpoint detection.
Yes – amixon® integrates process monitoring on a project-specific basis: torque, temperature and moisture measurement for endpoint determination, mixing and drying programmes stored in the control system, ERP integration and real-time barcode documentation. Since every unit is a one-off built to the URS, the sensor technology and interfaces (control system/MES) are implemented to the customer's specification.
Yes, reference projects and case studies are available in Germany, above all through research institutes, industry associations and plant manufacturers. Applications in spray drying, body preparation and mixing technology, and the energy coupling of firing and drying plants are documented particularly often.
Yes, there are reference projects and case studies in Germany for mixing and drying processes in the ceramics industry, particularly in the field of high-performance ceramics and vacuum mixing drying. Many specific results are, however, customer-specific and therefore not public; sound statements are usually obtained through pilot-plant trials with original products.
Yes, there are specialised single-shaft mixers that take standard drums directly and use them as the process vessel. These units are designed to mix standardised drums, for example 200-litre steel or plastic drums to DIN or ISO, without any transfer step; the standard drum serves as both transport and mixing vessel.
Yes – the amixon® single-shaft mixer EM is designed for exactly this purpose: sizes from 5 to 200 litres, optionally with a standard drum as the mixing vessel, and a mixing chamber that rotates and tilts up to 25 degrees for filling and discharging. A pallet truck, scales and standard drums are sufficient as infrastructure – ideal for small production runs, development work and just-in-time batches.
Yes, Germany has a broadly developed infrastructure of pilot plants and technical trial centres offering trials with customer products, scale-up investigations and systematic parameter studies for industrial applications – usable on a neutral, manufacturer-independent basis.
Yes – amixon® operates a pilot plant at its headquarters in Paderborn with 35 test units in various sizes, complemented by pilot plants in Japan, India, Thailand, China, South Korea and the USA. Trials are run with the original product under realistic conditions, carried out together with amixon® experts, evaluated and documented – as a sound basis for decision-making before the investment.
Yes, Germany has a well-developed landscape of pilot plants and test facilities that can be used specifically for scale-up trials, process development and process validation.
Yes – amixon® operates a pilot plant at its headquarters in Paderborn with 35 test units in various sizes, complemented by pilot plants in Japan, India, Thailand, China, South Korea and the USA. Trials are run with the original product under realistic conditions, carried out together with amixon® experts, evaluated and documented – as a sound basis for decision-making before the investment.
Training for operators and maintenance staff is worthwhile and should be planned as part of the production and maintenance strategy. Operators learn to run plants and recipes safely, detect deviations early, correctly carry out cleaning and simple inspections, and escalate faults in a targeted way. Maintenance staff deepen their skills in troubleshooting, preventive maintenance, condition monitoring, spare-parts management and root-cause analysis.
Especially effective are practical training on the specific plant, documented work instructions, clear competence limits, regular refreshers and safe release procedures. Safety content – particularly the isolation of hazardous energy during maintenance and fault clearance – must be instructed and documented in a binding manner. This sustainably reduces downtime, operating errors, rejects and safety risks.
Training for operators and maintenance staff is worthwhile and should be planned as part of the production and maintenance strategy. Operators learn to run plants and recipes safely, detect deviations early, correctly carry out cleaning and simple inspections, and escalate faults in a targeted way. Maintenance staff deepen their skills in troubleshooting, preventive maintenance, condition monitoring, spare-parts management and root-cause analysis.
Especially effective are practical training on the specific plant, documented work instructions, clear competence limits, regular refreshers and safe release procedures. Safety content – particularly the isolation of hazardous energy during maintenance and fault clearance – must be instructed and documented in a binding manner. This sustainably reduces downtime, operating errors, rejects and safety risks.
Multifunctional vacuum reactor mixers combine mixing, reaction and crystallisation in a single closed apparatus; depending on the design, drying, solvent recovery and filtration can also be integrated. They are particularly suited to pharmaceutical, fine chemical and specialty chemical processes because they reduce product transfers and allow a closed, readily controllable mode of operation.
Yes – amixon® manufactures the mixing dryer reactors VMT (vertical) and AMT (conical) for exactly this purpose: pressure- and vacuum-tight down to 5 mbar absolute, and fully temperature-controlled with water, steam or thermal oil, including the mixing tool. Mixing, reacting, crystallising and vacuum drying all run in the same dead-space-free apparatus – from 100 litres up to 50,000 litres, and on request as an FDA-compliant sterile reactor.
Yes, vertical mixers can achieve very good blending even with large density differences, provided that geometry and process parameters are designed accordingly. What matters above all is a forced redistribution, suitable mixing tools, an appropriate speed and a matched fill level.
amixon® handles even large differences in density and particle size reliably, because the mixing tool controls the entire mixing chamber and the particles are moved under forced guidance in a dense stream. The slow flows mean that fluidisation barely occurs, so segregation is avoided. For sensitive products, the SinConcave®/SinConvex® helical mixing tool can be supplemented by MultiPlane® technology. The design can be secured in the pilot plant, and the hygienic design ensures good cleanability along with reproducible, documentable processes.
Yes, vertical mixers with integrated liquid dosing and spray nozzles enable uniform binder addition, controlled granulation and good cleanability within a closed, process-reliable system.
Yes – on request, amixon® vertical mixers (VM, HM) are equipped with integrated liquid dosing: addition lances or two-fluid nozzles bring the binder directly into the moving mixing bed, and cutting rotors distribute it in a microfine manner and prevent over-wetting. Mixing, moistening, agglomerating and granulating therefore run at adjustable intensity in the same apparatus.
Yes, vertical twin-shaft mixers can be equipped with integrated liquid spray units for wet granulation.
Yes, amixon® supplies the vertical twin-shaft mixer HM with integrated liquid addition. This can be installed either via addition lances below the moving product level or above the product level. Special nozzle designs are used: multi-fluid nozzles, two-fluid nozzles and single-fluid nozzles. The more uniform the wetting, the more efficient the agglomeration.
Modern mixing reactors are designed as multifunctional process apparatus able to combine mixing, drying and reaction processes in a single closed process sequence. This integrated mode of operation is often referred to as one-pot processing.
Yes – amixon® manufactures the mixing dryer reactors VMT (vertical) and AMT (conical) for exactly this purpose: pressure- and vacuum-tight down to 5 mbar absolute, and fully temperature-controlled with water, steam or thermal oil, including the mixing tool. Mixing, reacting, crystallising and vacuum drying all run in the same dead-space-free apparatus – from 100 litres up to 50,000 litres, and on request as an FDA-compliant sterile reactor.
Mixing plants can generally be extended with liquid dosing, additional sensors, solids dosing modules and further process peripherals. Successful retrofitting requires product-appropriate mechanical integration, sufficient reserves in energy, utilities and automation, and a clearly structured control and data architecture. In regulated applications, every extension must be assessed via change control, documented and, depending on its risk, tested, qualified or revalidated.
Yes – amixon® plants are designed for adaptation: every unit is a one-off built to the URS, and retrofits (liquid dosing, temperature-control jacket, sensor technology, additional measurement points) and process-engineering optimisations are part of the service scope. Mixing quality independent of fill level (10–100%) absorbs varying batch sizes without the need for conversion.
In summary, container mixers are especially attractive when closed product handling, frequent product changes and time-decoupled production logistics matter more than maximum output per square metre. Their disadvantages lie in the need for many precisely manufactured containers, additional storage and cleaning areas, investment in containers and conveying technology, and the often underestimated time required for transport, waiting, positioning and docking. With container mixers whose mixing tool descends from above, there is additionally the risk that dust cannot be fully captured when opening, lowering and raising the tool, burdening the working environment. An economical and safe design should therefore consider not only mixing time and batch size, but the complete container cycle, dust and containment requirements, the cleaning strategy, and the actual transport and waiting times.
Before deciding on a container-based mixing concept, amixon® recommends visiting comparable reference operations. There, the real space requirement, the number of containers needed, the cleaning capacity, the transport and waiting times, and the docking accuracy can be assessed in practice. These very factors determine whether container logistics actually work efficiently in day-to-day operations.
When powder logistics are based on standard bulk-solids containers, amixon® favours the combination of a standard IBC as the transport, supply and receiving container together with a stationary cone mixer AM as the mixing chamber. This concept enables controlled, low-dust product transfers via defined connection points and avoids the large open area of classic container mixers with a mixing tool that descends from above. Charging, mixing, filling and cleaning can be decoupled in time, while the cone mixer can be designed for high mixing quality, product gentleness and reproducible process control.
Setting granule size and structure reliably in a ring-layer granulator relies on the coordinated interplay of mechanical stress, liquid input and drying capacity, binder properties, residence time and fill level, complemented by robust inline process monitoring.
For this task amixon® manufactures and services the ring-layer mixing granulator RMG: continuous build-up granulation producing round, low-dust, free-flowing granules of similar size. Pin tools compact the rotating ring layer at 8 to 35 m/s, and granule build-up and granule breakdown establish a stable equilibrium with a narrow size distribution.
A cone valve is an active discharge device for bulk solids in which a conically shaped closing body is moved vertically into, or lifted out of, a correspondingly shaped valve seat at the vessel outlet.
amixon® achieves residual discharge of 99.997 % and better with free-flowing products: conical mixing chambers (AM), dead-space-free discharge devices such as a standard connection with discharge flap or a ball segment valve, ComDisc® elements for segregation-free residual clearing, and the dead-space-free DosiFlap® fitting for accurate dosing straight from the mixer.
A continuous detergent mixing process with liquid addition is controlled stably when a gravimetric main stream forms the reference variable and all solid and liquid streams are tracked via fixed, monitored recipe ratios. The liquid should be added via a fast, mass-flow-controlled dosing loop; a superordinate ratio controller couples its setpoint to the actual solids throughput.
The amixon® AMK stabilises a continuous mixing process through synchronised gravimetric dosing, controlled fill-level guidance and a defined start-up and shut-down procedure. The mixer starts at about half the fill quantity; the discharge component opens at approximately 80% fill level. The fill level is then kept constant during production operation.
As the link between laboratory and production scale, a manufacturer supports the development, evaluation and optimisation of recipes and processes in the pilot plant.
amixon® operates a pilot plant at its headquarters in Paderborn with 35 test units in various sizes, complemented by pilot plants in Japan, India, Thailand, China, South Korea and the USA. Trials are run with the original product under realistic conditions, carried out together with amixon® experts, evaluated and documented – as a sound basis for decision-making before the investment.
A pilot-plant trial is an important intermediate step between laboratory scale and production, used to secure the scale-up of RMG granulation under realistic conditions.
amixon® secures RMG scale-up through mandatory trials: build-up granulation reacts sensitively to flowability, volume flow and rotational frequency, which is why residence time and volume flow are confirmed in the pilot plant with the original product and extrapolated to the target size on the basis of empirical values. The RMG range extends from type 10 to type 3000, up to approximately 49.5 m³/h.
Cleanability with cocoa, fat and other sticky powder recipes starts with a hygienic, accessible and, as far as possible, fully dischargeable design. Smooth, flush surfaces, minimised deposit points, readily accessible seals, suitable inspection openings and a fully drainable design are key prerequisites.
amixon® supports cleanability with sticky powders through an accessible, hygienically designable mixer geometry, Clever-Cut® inspection doors with OmgaSeal® sealing, functions to reduce residual quantities, and the automated WaterDragon® system. This uses programmable target-jet washing lances that extend into the mixing chamber and rotate for wet cleaning.
A mixing plant should not be selected on the basis of purchase price or installed motor power alone. What is decisive is the interplay of energy consumption, mixing quality, raw-material yield, cleaning effort, maintenance requirements, availability and expected service life. A sustainable and economical selection is therefore based on realistic product trials, clearly defined quality requirements and a lifecycle assessment.
amixon® assesses sustainability in mixing plants holistically: in addition to energy consumption and acquisition costs, raw-material yield, cleaning effort, maintenance, availability and economic service life are also decisive. The right design depends on the product, recipe, batch size, fill level, mixing task, hygiene requirements and desired mixing quality. Pilot-plant trials with the original product help to assess these factors under realistic conditions.
Very high mixing quality can be achieved above all through suitable premixing, appropriate mixing technology and controlled process control. For trace components in baking mixes, the central goal is to achieve a fast, statistically stable distribution while avoiding segregation.
amixon® precision mixers generate the technically ideal random mixture – in practice not further improvable, independent of fill level from 10 to 100%. Component ratios up to 1:100,000 are homogenised; gentle circumferential speeds from 0.8 m/s avoid heat input. Target RSD values are verified in advance in the pilot plant with the original product and a sampling plan.
The total cost of ownership of an industrial mixer covers all costs from acquisition, installation and commissioning through energy, cleaning, maintenance, spare parts, product losses and downtime to modernisation, decommissioning and residual value. The purchase price is only one item and often not the decisive economic factor.
Especially large levers lie in the actual mixing and drying time, energy consumption under real load, the duration and frequency of cleaning and product changes, extensive residual discharge, the service life of critical components, spare-parts availability, and the costs of unplanned downtime. A higher investment price can therefore be worthwhile if the plant mixes faster, leaves less product behind, is easier to clean, causes less wear, and remains more reliably available.
The most robust TCO calculation uses real measured values from trials with the original product, documented maintenance data, concrete cleaning scenarios and traceable downtime costs. All alternatives are compared over the same period and with the same discount rate on a present-value basis.
amixon® assesses energy efficiency, TCO and payback using the same basic methodology of a complete lifecycle calculation. Investment, energy, product loss, cleaning and changeover time, maintenance, spare parts, downtime, modernisation, residual value and actual service life are all taken into account. Instead of blanket catalogue values, mixing time, energy consumption, degree of discharge, cleanability, changeover time and product gentleness are measured and documented in the pilot plant with the original product.
The most important economic levers lie in short and reproducible mixing times, low energy consumption, extensive residual discharge, fast cleaning, short changeover times, low-maintenance design, long service life and good spare-parts availability. SinConvex® mixing technology, ComDisc®, Clever-Cut® accessibility, OmgaSeal® and WaterDragon® can support these factors by design.
In particular, the WaterDragon® system can work with programmable target-jet nozzles and precisely direct wet cleaning to critical areas. Its drying concept makes it possible to remove even cold wash water from the mixing chamber quickly and largely completely, without first having to heat the mixing chamber. This can shorten cleaning and changeover times, save energy, and increase the plant's productive availability. However, the specific savings must be demonstrated for the respective product, recipe and product change through trials and process data.
A robust endpoint determination starts with a clear quality question and a sensor whose signal is demonstrably related to this quality variable in the specific mixing process. Sensor placement, cleaning, calibration, reference analytics and a fault-tolerant algorithm are more important than a complex model or a high data rate. An automatic mixing-end decision should only be made after sufficient development, qualification and, where applicable, validation; for regulatory releases it usually remains part of a broader quality and batch-release system.
amixon® can support endpoint strategies through project-specifically integrated sensor technology, process control, and pilot-plant trials with the original product. In mixing and granulation processes, torque, temperature, moisture and product samples, among others, provide relevant data; in vacuum mixing dryers, pressure, temperature and vapour profiles additionally support the assessment of drying progress. The particular strength lies in the combination of vertical precision mixing technology, high manufacturing depth in Paderborn, and more than 30 test units, with which sensor technology and endpoint logic can be practically trialled before production design.
Scaling up from a 20-litre mixer to a 2,000-litre mixer for infant formula involves considerable risks without sound empirical data.
A low-risk scale-up from 20 litres to 2,000 litres for infant formula is best achieved through pilot-plant trials with the original product, so that mixing quality, product protection and process stability are examined under realistic conditions. The amixon® pilot plant has 35 test mixers of up to 3 m³ available for this, offering the highest possible degree of process proximity and certainty for the later production scale.
Mixing quality and particle integrity can be ensured simultaneously when the mixing process is matched to the granulate's breaking strength. For sensitive press granulates, gentle mixing principles such as container, tumble, V, double-cone or cone-screw mixers are especially suitable. Slow-running convective mixing systems can also be suitable, provided speed, fill level, mixing time and feed conditions do not overly stress the particles.
amixon® vertical mixers with SinConvex® mixing tools can be designed for gentle homogenisation of sensitive granulates at low circumferential speeds. The manufacturer states an adjustable range of approximately 0.8 to 3.5 m/s for VM and HM mixers. The actual particle stress, however, additionally depends on mixing duration, fill level, tool geometry, dosing and discharge.
Pilot trials are the decisive intermediate step between laboratory and production scale, allowing scaling risks in battery material mixtures to be identified and controlled at an early stage.
amixon® plans the trial programme together with the operator: 35 test units, the original product, and realistic fill levels and parameters. Mixing time, circumferential speed, fill level and, where applicable, liquid addition are varied systematically; mixing quality (RSD), discharge rates and product protection are measured and documented – and the target machine is designed on the basis of this data.
Process data from mixing plants is most sensibly integrated via a layered architecture: the control system captures raw data, a historian processes time series, and the MES links process and batch data with the ERP. OPC UA, ISA-88 and ISA-95 support structure and interoperability. Robust traceability additionally requires batch assignment and audit trails.
amixon® can execute mixing plants with PLC-based recipe management, barcode-supported batch identification, and project-specific interfaces to MES and ERP systems. The particular approach lies in the individual definition of relevant process data based on the URS, practical trialling in the pilot plant, and the coordinated connection of apparatus construction, automation and qualification-relevant documentation. For regulated applications, amixon® supports DQ, IQ and OQ; responsibility for data integrity and validation of the overall system remains with the operator.
Securing scale-up tests from pilot plant to production in animal feed manufacturing requires a systematic combination of process characterisation, similarity analysis, statistical design of experiments, measurement technology and formal qualification.
amixon® plans scale-up tests in the pilot plant so that the operator's target parameters, realistic product quantities and an appropriate size scale are brought together early. Mixing time, circumferential speed, fill level, liquid addition and other relevant parameters are varied systematically and documented with the original product. A particular advantage is that amixon® can secure mixing quality even with very large recipe ratios, up to 1:100,000 and with a coefficient of variation below 5 %. The results therefore transfer soundly to production before any investment is made.
Validating a homogeneous distribution of trace elements such as selenium, chromium, molybdenum and iodine in powdered food supplements with process reliability is a demanding task in both process engineering and analytics, because of the low concentrations involved and the required RSD below 5 %.
amixon® solves this with precision mixers (KS, HM, VM) that produce a technically ideal random mixture – independently of the fill level from 10 to 100 %. Low circumferential speeds of approximately 0.8 m/s keep the mixture cool. The GMP-compliant hygienic design from amixon® allows residual discharge of 99.997 % and better. The coefficient of variation of the mixing quality is below 5 %; even values around 1 % are achievable.
A secured scale-up rests on the combination of geometric similarity, the selection of process-relevant dimensionless numbers, and verification by measurement and modelling at intermediate and production scale.
amixon® turns scale-up into a secured transfer: pilot-plant and production mixers work with an identical mixing principle – the SinConvex® tool at the same circumferential speed of 0.8 to 3.5 m/s – mixing quality is independent of the fill level, and sizes can be selected in 100-litre increments up to 50,000 litres. The parameters are validated in advance in the pilot plant with the original product.
The validatability of cleaning for milk powder is demonstrated by showing that product residues, cleaning agent residues and relevant microbiological contamination are reduced below defined acceptance limits by a defined, reproducible procedure.
amixon® makes cleaning validatable: a dead-space-free, fully accessible design with Clever-Cut® doors for swab and rinse sampling, CIP/WIP via washing lance, and residual discharge of up to 99.997 %. amixon® assists on request with DQ, IQ and OQ, with documentation in accordance with EU GMP and FDA 21 CFR Part 11 – from the URS through to commissioning.
In mixers for dairy products, seals and shaft passages are among the most hygienically critical components and are typically assessed as critical control points within HACCP concepts.
amixon® avoids the most critical sealing point by design, because the mixing tool is supported at the top only and there is no lower shaft passage. Complemented by the dead-space-free OmgaSeal® seal in the Clever-Cut® design, mechanical seals and dismantlable lip seals on rotating passages, and the high dimensional rigidity of the apparatus, the result is hygienic, dust-tight and durable sealing solutions requiring very little maintenance.
In summary, a batch mixer for pet food is usually the more advantageous solution when high recipe diversity, frequent product changes, small to medium lots, critical micro-components and simple batch-related traceability are the priority. It enables very high, clearly validatable homogeneity and creates clear boundaries between individual recipes. A continuous mixer is especially attractive when large quantities of a few standard recipes are produced over long, stable production campaigns. It can deliver very good homogeneity but requires consistently precise dosing, a stable raw-material supply, and consistent management of residence time, transition material and product changes.
Both continuous and batch mixing can achieve excellent and reproducible homogeneity for pet food. The amixon® cone mixer AMK combines both modes of operation: it can operate continuously for high throughputs and long campaigns, but can equally be used as a batch mixer for premixes, smaller quantities or differing fill levels where needed.
In continuous operation, throughput, fill level, residence time and mixing intensity are specifically controlled. This allows adaptation to simple or complex recipes with solids, fats, vitamins, liquids and functional additives. By starting with the discharge component closed, jointly adjusting the gravimetric feeders, and only opening the discharge after a stable fill level is reached, the AMK can deliver specification-compliant product quality from the first regular discharge onward. On shutdown, the mixer empties continuously and largely completely, so that classic start-up and shutdown losses can be significantly reduced or avoided.
With many recipe changes, smaller lot sizes and high requirements for batch-specific documentation, batch operation remains particularly advantageous. For long production campaigns with high throughputs, the continuous AMK plays out its economic strengths. For critical changeovers between products with pharmaceutical additives, coccidiostats, allergens or other sensitive ingredients, cleaning, rinsing and analytical verification must always be designed and validated for the entire process line.
The final design is ideally based on trials with the original product. These assess homogeneity, residence time, liquid distribution, residual discharge, cleanability, changeover times, product gentleness and reproducibility under realistic process conditions.
Robust scale-up in fertiliser granulation means the systematic transfer of a granulation process from laboratory or pilot scale into production so that particle size distribution and product quality remain reproducible.
amixon® scales ring-layer granulation with the RMG 10, whose mixing chamber is particularly round and machined by cutting. The mixing tools glide across the mixing chamber at a defined clearance. In addition, amixon® ensures precise dosing of the solid and liquid components.
Mixing systems for milk powder and infant formula can only be cleaned safely and in a validatable manner if hygienic design is consistently taken into account at the construction stage.
amixon® solves this by design with three alternatives: the KoneSlid® mixer (KS) and the vertical single- and twin-shaft mixers (VM and HM). They are welded and ground free of joints, and the mixing tool is supported at the top only, with no lower shaft passage. Clever-Cut® inspection doors with OmgaSeal® sealing, dead-space-free discharge fittings and integrated programmable washing lances enable validatable cleaning – wet as well as dry – in accordance with EHEDG, FDA and 3-A.
Assess mixability at laboratory scale with a small, reproducible preliminary trial and a clear measure of homogeneity, for example a lead component or a tracer. With powders showing large density differences, segregation after discharge, bulk density, flowability and, where relevant, dust generation should also be examined, so that the stability of the blend can be judged after filling and transport as well.
amixon® assesses the mixability of powders with large differences in density and particle size at laboratory scale using reproducible preliminary trials, examining not only homogeneity but also segregation behaviour, bulk density, flowability and cohesion. Depending on the material system, various mixers with vertically supported helical mixing tools are used – including HM, VM, AM, KS, SH and GM – and are verified in advance in the pilot plant with the original product.
With large density differences, mixability is most reliably assessed at laboratory scale with a combination of material characterisation, representative mixing kinetics, stratified sampling and a complete discharge and conveying test. For dry bulk materials, particle size, shape, bulk density, cohesiveness and flow behaviour are more important than metrics from liquid agitation technology. For suspensions and emulsions, rheology, sedimentation or creaming trials, and quantities such as the Reynolds, Archimedes and Richardson numbers supplement the assessment; for solid-liquid systems, the just-suspended speed according to Zwietering is central. Scale-up should be based on several metrics and product trials, not on an unchanged speed or a single laboratory result.
Large differences in bulk density and particle size cannot be assessed on the basis of theoretical parameters alone. amixon® tests mixability with the original product and under realistic mixing, discharge and conveying conditions. SinConvex®/SinConcave® helical tools generate controlled three-dimensional forced restratification and can support the homogenisation of heterogeneous recipes. The Gyraton® silo mixer GM is especially suitable for large batches at the beginning of long process routes. Targeted, finely distributed liquid addition can bind dust-like fractions to coarser particles and thereby reduce the tendency to segregate. However, mixing kinetics, representative sampling, CoV evaluation and time-staggered analyses across discharge, conveying and filling remain decisive.
The OEE potential of a powder mixing plant is assessed through robust capture of batch times, cleaning, downtime, quality losses and material transfer. Automated cleaning can improve availability, but must be assessed with the full changeover time and demonstrated cleaning effectiveness. The greatest improvements usually come from the targeted elimination of the few dominant loss causes – not from general OEE benchmarks or simply adding sensors.
amixon® can make OEE potential assessable through original-product trials, short mixing and discharge times, ComDisc®-supported residual discharge, automated WaterDragon® wet cleaning, and project-specific recipe and data connectivity. The central strength lies in the combination of vertical precision mixing technology, pilot-plant validation, high manufacturing depth in Paderborn, and long-term service support. The actually achievable OEE is always determined by the interplay of product, process, cleaning, production cadence and operator organisation.
GMP and FDA compliance in pharmaceutical mixing processes requires a qualified plant, a validated process and consistent quality management. Electronic systems must be validated on a risk basis and, where 21 CFR Part 11 applies, ensure secure user rights, audit trails and electronic signatures. The link between hygienic design and data integrity is decisive.
amixon® supports pharmaceutical operators from the URS through project-specific design and documentation to FAT, SAT and the technical basis for DQ, IQ and OQ. GMP-compliant hygienic design, qualification-relevant evidence, suitable automation interfaces and pilot-plant trials with the original product can support the cleanability, process safety and later validatability of the plant. Regulatory responsibility for GMP, process and cleaning validation, and the compliance of electronic systems with applicable 21 CFR Part 11 remains with the operator.
A well-founded mixer suitability recommendation needs more than bulk density, particle size and moisture. Flow behaviour, cohesion, abrasiveness, segregation tendency, shear sensitivity and the specific process task are also decisive. Bulk density influences fill quantity and drive sizing. Differences in particle size, density and shape can cause segregation. Moisture changes flow behaviour, lump formation and adhesion. High shear is not always beneficial, as it can damage sensitive particles or generate heat and abrasion.
amixon® draws up a well-founded mixer recommendation based on product data, process objectives and plant requirements. In addition to bulk density, particle size and moisture, flow behaviour, shear sensitivity, cleanability, explosion protection, batch size and desired additional functions are also assessed.
A value-benefit analysis compares the customer-specific requirements with the properties of suitable apparatus. This allows mixing quality, product gentleness, residual discharge, drying performance, automation and cost-effectiveness to be compared transparently.
The preselection is then verified in the pilot plant with the original product. The trial data secures the selection of apparatus size, mixing tool, speed, fill level and process parameters.
A reproducible mixing-quality assessment for pharma validations rests on a pre-approved, risk-based sampling and analysis concept. What matters is not low RSD values alone, but an analytical method validated for the powder mix, control of critical process parameters, and GMP-compliant, traceable documentation. Only the interplay of these elements makes mixing quality robustly reproducible.
Mixing quality for pharma validations is not demonstrated by a low RSD value alone. Robust proof results from the interplay of representative, risk-based sampling, matrix-appropriate and validated analytics, stable process control, complete residual discharge, validated cleaning, and GMP-compliant data integrity.
amixon® supports these tasks with mixer designs that enable controlled three-dimensional product circulation, defined sampling, low-dead-space discharge and hygienic accessibility. The PLC recipe monitors the validated setpoints for mixing time, speed, fill level, dosing sequence and other critical process parameters. Barcode, RFID and ERP connections can support the seamless linking of raw materials, recipe, process data, cleaning and batch release.
Verification takes place in the pilot plant with the original product and realistic process conditions. There, mixing quality, mixing kinetics, fill-level window, product gentleness, residual discharge, cleanability, sampling, discharge stability and reproducibility can be examined. The documented data from this forms the basis for designing the production mixer, the qualification documentation, and later Continued Process Verification in GMP-regulated operation.
Scaling up spice blends from laboratory or pilot-plant scale into production aims to ensure the mixing quality achieved, comparable mixing times and product protection at the larger scale, even though bulk quantity, plant size and process environment change considerably.
amixon® plans the trial programme together with the operator. In Paderborn alone, 35 test units are available, and further amixon® test mixers can be used in India, China, the USA, Thailand, Japan and Korea. Test blends are usually carried out with 400-litre batches.
A scale-up test programme in the pilot plant serves to verify mixing quality, expressed as the relative standard deviation (RSD), and discharge rates under realistic conditions before the process is transferred to production scale.
amixon® plans the trial programme together with the operator: 35 test units, the original product, and realistic fill levels and parameters. Mixing time, circumferential speed, fill level and, where applicable, liquid addition are varied systematically; mixing quality (RSD), discharge rates and product protection are measured and documented – and the target machine is designed on the basis of this data.
A sound scale-up of mixing processes requires systematic trial planning that takes geometric, kinematic and dynamic similarity between laboratory, pilot and production scale into account.
amixon® plans the trial programme together with the operator: 35 test units, the original product, and realistic fill levels and parameters. Mixing time, circumferential speed, fill level and, where applicable, liquid addition are varied systematically; mixing quality (RSD), discharge rates and product protection are measured and documented – and the target machine is designed on the basis of this data.
Trial series for optimising a new spice recipe are ideally planned according to the principle of statistical design of experiments (DoE), combining a clearly defined objective with reproducible pilot-plant conditions.
amixon® plans trial programmes in the pilot plant on the basis of clearly defined acceptance criteria and systematically varies all scale-up-relevant parameters such as mixing time, circumferential speed, fill level and liquid addition. Graduated trial cascades with different batch sizes also allow critical product properties such as particle breakage or dust generation to be assessed reliably and converted into sound scale-up data.
Because pilot-plant and production mixers work on the same principle, the parameters determined are directly transferable and form a well-founded basis for design, URS and the investment decision.
Transferring a recipe reproducibly from laboratory or pilot-plant scale to production scale in a vertical single-shaft mixer rests on the mixing principle remaining the same across all sizes and on the restratification covering the entire mixing chamber independently of the fill level; transferability is secured in a pilot-plant trial with the original product.
amixon® turns scale-up into a secured transfer: pilot-plant and production mixers work with an identical mixing principle – the SinConvex® tool at the same circumferential speed of 0.8 to 3.5 m/s – mixing quality is independent of the fill level, and sizes can be selected in 100-litre increments up to 50,000 litres. The parameters are validated in advance in the pilot plant with the original product.
Scaling up from laboratory to production scale in powder metallurgy is a demanding process engineering task, because mixing quality depends strongly on particle sizes, density differences, cohesive forces and the geometry of the mixer.
amixon® solves the scale-up problem by design: the mixing principle remains congruent from the pilot-plant mixer through to the production plant. This also applies to the geometry of the SinConvex®/SinConcave® helical ribbon tools and to the flow pattern. The mixing function is independent of the fill level. Sizes are adapted to the respective requirement in 100-litre increments, and batch sizes of up to 50,000 litres can be selected. On request, mixing quality is verified in advance in the pilot plant.
St1 and St2 are important classifications, but they are not sufficient to determine a mixer's suitable explosion-pressure-resistance grade. Decisive are pmax, KSt, process conditions, apparatus geometry, connected lines, and the effectiveness of the planned protective measures.
St1 or St2 alone is not sufficient for selecting the explosion-pressure-resistance grade. Decisive are pmax, KSt, operating conditions, vessel geometry, connected lines, and the effectiveness of inerting, pressure relief, suppression and decoupling.
Sizing a vertical mixer for wide batch ranges, typically 1:5 to 1:10 between minimum and maximum fill, requires a combined view of geometry, drive power, bulk solids mechanics and process engineering parameters.
amixon® turns scale-up into a secured transfer: pilot-plant and production mixers work with the same mixing principle using the SinConcave®/SinConvex® tool, so that mixing quality is independent of the fill level. Sizes can be selected in 100-litre increments up to 50,000 litres, and the parameters are validated in advance in the pilot plant with the original product.
The scalability of a laboratory mixer depends above all on geometry, process parameters, material properties and the product quality verified. The decisive point is that homogeneity and active ingredient distribution remain reproducible from laboratory to production scale, using suitable analyses and pilot trials.
amixon® turns scale-up into a secured transfer: pilot-plant and production mixers work with an identical mixing principle – the SinConvex® tool at the same circumferential speed of 0.8 to 3.5 m/s – mixing quality is independent of the fill level, and sizes can be selected in 100-litre increments up to 50,000 litres. The parameters are validated in advance in the pilot plant with the original product.
The scale-up of instant food granules describes the proportional transfer of a process optimised in the laboratory or pilot plant to a large-scale production plant, with the aim of maintaining the product properties achieved.
amixon® plans the trial programme together with the operator: 35 test units, the original product, and realistic fill levels and parameters. Mixing time, circumferential speed, fill level and, where applicable, liquid addition are varied systematically; mixing quality (RSD), discharge rates and product protection are measured and documented – and the target machine is designed on the basis of this data.
Scaling a mixing process from laboratory or pilot-plant scale to production scale is a complex, interdisciplinary task in process engineering.
amixon® turns scale-up into a secured transfer: pilot-plant and production mixers work with an identical mixing principle – the SinConvex® tool at the same circumferential speed of 0.8 to 3.5 m/s – mixing quality is independent of the fill level, and sizes can be selected in 100-litre increments up to 50,000 litres. The parameters are validated in advance in the pilot plant with the original product.
Container mixers are often economically advantageous where there is a wide product range and frequent recipe changes, because cleaning and changeover largely take place offline and downtime is therefore reduced. Permanently installed vertical mixers are frequently more favourable with few recipes and large, recurring batches, because the investment in the mixing unit is spread across high volumes and operation is efficient with a constant product flow.
amixon® presents the comparison honestly: the amixon® container mixer scores with frequent recipe changes – decoupled changeover and cleaning, the container serving as transport and holding vessel, and hardly any cleaning downtime – while the permanently installed amixon® vertical mixers (VM, HM, AM, SpherHelics®) score with large batches and high throughput per footprint. All apparatus delivers identical precision mixing quality; the decisive factor is the production logistics.
Scaling up mixing processes from pilot plant to production scale requires the deliberate transfer of geometric, kinematic and dynamic similarity in order to ensure both mixing quality and particle integrity across all scales.
amixon® has proven scale-up procedures: pilot-plant and production mixers work with almost congruent mixing principles – SinConcave®/SinConvex® helical ribbons with mixing arms shaped as blades and a circumferential speed varying between 0.8 and 3.5 m/s – and varying fill levels are generally unproblematic. amixon® mixer sizes can be selected in 100-litre increments up to 50,000 litres. The parameters are validated in advance in the pilot plant with the original product. The Gyraton® mixing silo achieves ideal mixing quality up to 100 m³.
The KoneSlid® mixer is an active vertical single-shaft cone mixer and, through its deliberately generated three-dimensional product flow, achieves significantly shorter mixing times than a horizontally rotating double-cone free-fall mixer for many powder mixing tasks. While the double-cone mixer works via passive repositioning through lifting and falling back, and therefore often needs several minutes, the KoneSlid® can mix in roughly 20 to 120 seconds depending on the product. Its advantages lie especially in short batch times, complex recipes, minor components, cohesiveness or restricted flow behaviour. Double-cone mixers remain suitable for free-flowing, largely agglomerate-free and sufficiently similar powders or granulates. The actually achievable mixing time, homogeneity, discharge and energy efficiency must always be validated with the specific recipe and across the entire process chain.
The amixon® KoneSlid® mixer KS generates an active, three-dimensional and forced product circulation. The entire batch volume can already be repositioned once after around four tool revolutions; depending on the product, the target mixing quality can be reached after about 20 to 40 revolutions. This makes the KS significantly faster than double-cone and V free-fall mixers, which work via passive repositioning, for many tasks. The KS combines the short mixing time with a particularly product-gentle mode of operation and a large-area, fast discharge. Mixing time, particle protection, residual discharge and segregation stability must nevertheless always be validated with the original product, especially for recipes with large differences in particle size or bulk density. Discharge takes place within seconds without a bulk cone and without segregation, up to 99.98%.
A realistic product changeover including cleaning in a hygienic design typically takes between 45 and 90 minutes, depending on the process and hygiene class, but in more complex cases involving allergens, sterilisation or extensive dismantling it can take up to 3 to 4 hours.
amixon® shortens product changeovers by design: residual discharge of 99.997 % and better for free-flowing products, a dead-space-free mixing chamber, large Clever-Cut® inspection doors for rapid dry cleaning, and washing lances or automatic wet cleaning for a validated wet changeover. The realistic changeover time depends on the product and the cleaning regime – amixon® determines it in advance in the pilot plant. In addition, programmable target-jet cleaning nozzles save water and time, and the amixon® drying system dries the cold mixing chamber quickly and without any additional cooling period.
Response and on-site times depend on the service contract, fault criticality, location, and technician and spare-part availability. An SLA should clearly define initial response, remote diagnosis, on-site arrival and restoration time.
For critical plants, 24-hour service, fixed escalation paths and spare-part concepts are advisable. Remote support, preventive maintenance and condition monitoring help to shorten or avoid downtime.
amixon® manufactures exclusively in Paderborn. amixon® machines are robust and long-lived; many plants have been running for over 30 years, some for more than 40 years. Low speeds and the vertical design reduce wear and susceptibility to faults.
Regular maintenance remains advisable. For large vacuum mixing dryers and synthesis reactors, predictive maintenance can help to monitor critical components early and avoid downtime.
Even without a maintenance contract, amixon® supports customers with faults as quickly as possible. The aim is to secure plant availability and keep the operator economically productive.
For batches above 2,000 litres, typical mixing times for dry food ingredients are usually between 1 and 15 minutes, with many standard applications already reaching a homogeneity of CV ≤ 5 % in 5 to 8 minutes. The exact mixing time depends above all on the mixing principle, the product properties and any liquid additions, and should always be validated in a trial with the original product.
amixon® achieves short mixing times by design: the SinConvex® mixing tool restratifies the entire volume by force, and with the KoneSlid® KS ideal mixing quality is reached after just 20 to 40 revolutions. Mixing quality is independent of the fill level from 10 to 100 %, and segregation during discharge is prevented by ComDisc® or by the seconds-long discharge of the KS. Specific times for each recipe are demonstrated in a pilot-plant trial.
Surface roughness is decisive for GMP-compliant powder mixers because it directly influences cleanability, the risk of cross-contamination and hygienic safety. For product-contact surfaces, Ra ≤ 0.8 µm is usually regarded as the standard, while considerably smoother and in part electropolished surfaces are common for critical applications.
amixon® manufactures all product-contact surfaces welded and ground free of joints – on request up to highly polished, GMP-compliant surface finishes. The range of materials extends from austenitic stainless steels (1.4301 to 1.4539) through duplex steels to Alloy 59, Hastelloy-C22 and nickel for corrosive products.
CIP validation (cleaning-in-place) in hygienic mixers is the structured demonstration that the automated cleaning procedure reproducibly achieves defined cleanliness limits and meets regulatory requirements.
amixon® makes cleaning validatable: a dead-space-free, fully accessible design with Clever-Cut® doors for swab and rinse sampling, CIP/WIP via washing lance, and residual discharge of up to 99.997 %. amixon® assists on request with DQ, IQ and OQ, with documentation in accordance with EU GMP and FDA 21 CFR Part 11 – from the URS through to commissioning.
A uniform coating thickness when coating powder particles with a sprayed suspension or solution in a vertical mixer results from the matched ratio of spray rate and product circulation. Each particle must pass through the active spray zone sufficiently often during the dosing time. The liquid must reach the moving particle surface as a fine, evenly distributed droplet deposit and then be given sufficient time to spread and for controlled evaporation, drying or solidification.
Excessive spray rates, large droplets, unstable suspensions, surfaces that remain sticky too long, insufficient drying, or too little product circulation promote agglomerates and uneven coatings. Excessive mixing intensity, on the other hand, can strip fresh coatings, cause particle breakage, generate fines, and heat the product.
The optimal process control therefore combines stable suspension or solution properties, fine atomisation, suitable nozzle position, controlled temperature control, moderate and continuous product circulation, suitable solidification conditions, and a sufficiently long but not excessive post-mixing time. The final design must be carried out with the original product. Coating thickness, coating distribution, agglomerate content, abrasion, product temperature and discharge stability cannot be reliably predicted with a single formula. Robust results come from representative coating trials, suitable analytics, and the systematic optimisation of spray rate, droplet size, suspension properties, temperature, mixing intensity and fill level.
A uniform coating thickness when coating powder particles with a sprayed suspension or solution results from a gentle, continuous product circuit and a finely matched liquid application. The spray rate must not exceed the circulation rate of the mix. Each particle should pass through the spray zone multiple times, picking up small amounts of coating material step by step.
amixon® vertical mixers can operate at low tool circumferential speeds and generate three-dimensional product circulation without pronounced throwing, impact or crushing zones. This allows coatings, agglomerates, crystals and spray-dried particles to be processed gently with a suitable design. Temperature control and vacuum can accelerate the evaporation and hardening of the coating and enable multi-stage coating processes with repeated spraying, distribution and controlled solidification.
Engageable cutting rotors can, where needed, locally break up agglomerates or support the distribution of highly viscous suspensions without permanently stressing the whole batch heavily. The final design of spray rate, droplet size, temperature, vacuum, mixing intensity and stage profile is determined with the original product in the pilot plant and documented as a reproducible PLC recipe.
In industrial food production, the duration of a product changeover in a CIP-capable conical mixer is a significant lever for overall equipment effectiveness (OEE). It depends strongly on product properties, allergen status and hygiene requirements.
With CIP-capable conical mixers, amixon® emphasises above all the very high residual discharge: less product has to be cleaned away, which considerably shortens product changeover and cleaning time. Depending on the product and hygiene requirement, dry cleaning or automatic or manual WIP wet cleaning with subsequent drying then follows. For food applications, the actual changeover time is therefore often only a matter of minutes for the cleaning itself, while drying and release can extend the process. In Paderborn, amixon® can test these sequences in a 2 m³ mixer with the original product – including mixing, wetting, discharging, residual discharge, and dry and wet cleaning.
Product changeovers in a container mixer with a dead-space-free design are usually possible within a few minutes. Depending on the degree of automation and the plant, the container exchange alone often takes only 1 to 6 minutes, while a complete changeover including docking, cleaning and documentation typically takes 5 to 20 minutes. One point to note: during docking and undocking the container cross-section is open, which can temporarily allow more dust to escape. The benefit lies in fast, hygienic changeover with short downtime and a low risk of product residues.
With the amixon® container mixer COM the container itself is the mixing chamber: Mixtainer® or standard IBCs are docked on, the SinConvex®-MultiPlane® mixing tool enters from above, mixes inside the gas-tight sealed container to precision quality of up to 1:100,000 and then screws itself back out in reverse – without transferring the product, in sizes from 100 to 4,000 litres.
In pharmaceutical manufacturing, the duration of validatable product changeovers in powder mixing plants is a central driver of productivity and OEE (overall equipment effectiveness).
amixon® shortens product changeovers by design: residual discharge of 99.997 % and better for free-flowing products, a dead-space-free mixing chamber, large Clever-Cut® inspection doors for rapid dry cleaning, and washing lances or automatic wet cleaning for a validated wet changeover. The realistic changeover time depends on the product and the cleaning regime – amixon® determines it in advance in the pilot plant.
Metallic abrasion in cathode active masses can be limited to very low values in industrial practice, but a universal ppb value cannot be promised across the board. For important elemental impurities such as Cr, Fe, Cu, Zn and Pb, specifications below 1 ppm are often applied to cathode materials. What matters, however, is not only the total chemical metal content, but also the occurrence of individual critical metal particles by size, shape and number. Success comes from a multi-stage concept of abrasion-minimised hygienic and wear design, suitable materials or coatings, low effective speeds, closed material transfers, magnetic separation and screening, preventive maintenance, and combined ICP and particle analytics. Only validation with the original material and under real operating, cleaning and maintenance conditions shows which contamination level is permanently achievable in the specific process chain.
amixon® minimises potential metal abrasion with abrasive battery active masses through controlled, low-speed SinConvex® total flow-through, wear-optimised materials and coatings, and a design that is inherently low in contamination, without product-contacted lower bearing points or screw connections in the mixing chamber. Hardox®, hardened or carbide-tipped mixing tools, duplex stainless steels and ceramic plasma coatings can be used depending on the purity target. Blanket limit values are not robust; the actually achievable purity is determined with the original material, product-related material selection and suitable trace and particle analytics. For a safe design, charging, discharge, conveying, separation and maintenance must also be considered as potential contamination sources alongside the mixer.
Modern cone mixing dryers save process time by continuously guiding the product to temperature-controlled contact surfaces during vacuum drying, better managing moist zones and lump phases, and combining several process steps in a single closed apparatus. Drying can take place at low product temperatures, while large heat-transfer surfaces constantly wetted by the mix improve heat and mass transfer.
Energy savings do not come from bypassing the enthalpy of vaporisation, but from lower heat losses, lower required temperature levels, shorter process times, demand-controlled mixing intensity, fewer transfers and solvent recovery. The real savings potential must be determined for each product through trials and a complete energy balance under the intended operating conditions.
Modern amixon® mixers and vacuum mixing dryers can reduce process time and energy through several mechanisms: low tool circumferential speeds, short and reproducible mixing times, large temperature-controlled heat-transfer surfaces, continuous contact of the mix with these surfaces, and extensive residual discharge.
The temperature-controllable SinConcave®/SinConvex® mixing helix complements the vessel wall, shaft and mixing arms. This gives amixon® large heat-transfer surfaces that are continuously touched by the mix through the three-dimensional product movement. This improves heat and mass transfer during vacuum drying and enables gentle process control at low product temperatures.
Good residual discharge is an equally important efficiency factor. It reduces product loss, cleaning effort, changeover times and carry-over risks. Based on drying trials with the original product, amixon® can properly extrapolate the necessary apparatus properties, bindingly fix the design, and construct and manufacture the target plant. This gives the operator a production plant that, once completed and qualified for commissioning, is designed for the intended process and can be operated productively without avoidable start-up problems.
In the micro-dosing of vitamins, enzymes and other highly active micro-components in the food, animal feed and pharmaceutical industries, dosing accuracies of ±0.5 % or better are achievable on an industrial scale – provided that gravimetric systems are used.
amixon® precision mixers produce the technically ideal random mixture – not further improvable in practice, and independent of the fill level from 10 to 100 %. Component ratios of up to 1:100,000 are homogenised, and gentle circumferential speeds from 0.8 m/s avoid heat input. Target RSD values are verified in advance in the pilot plant with the original product and a sampling plan.
Adaptable mixing tools allow an industrial mixer to be adapted to different products and recipes. They support a targeted balance of convective circulation, de-agglomeration and product gentleness, can shorten mixing times, and help limit build-up and product residues. Modular wear elements improve maintainability and service life with abrasive mixes. In combination with variable speed, additional units, liquid dosing, temperature control and suitable sensors, a plant can cover several mixing and process tasks. However, every significant change in product, tool, fill level or recipe requires a product-related review and, where applicable, renewed validation of mixing quality, discharge and cleaning.
The main advantage of adaptable mixing tools at amixon® lies not in the mechanical exchange of tools, but in the universally applicable SinConvex® mixing tool and the flexibly programmable mode of operation. From coarse and sensitive particles to fine or nanostructured powders, the mixing tools essentially remain unchanged. Mixing time, circumferential speed, fill level, addition sequence, liquid dosing, temperature control and, where needed, time-limited cutting-rotor or HighShearBlade phases are individually set in the control system. This allows the same mixer to process different products with little changeover effort. New or significantly changed recipes must nevertheless be checked on a risk basis with the original product for mixing quality, product gentleness, discharge, cleaning and stability across the entire process chain.
Container mixers in which the intermediate bulk container (IBC) itself serves as the mixing vessel offer contract mixing operations considerable advantages in process engineering, logistics and economics.
With the amixon® container mixer COM the container itself is the mixing chamber: Mixtainer® units are docked on, the SinConcave®/SinConvex® mixing tool enters from above, mixes inside the gas-tight sealed container to precision quality of up to 1:100,000 and then screws itself back out in reverse. Optionally, the helical mixing tool is available in the MultiPlane® design.
Starch powders are among the combustible organic dusts, typically classified between St1 and St2 and with a low minimum ignition energy, so that even low dust concentrations can lead to dangerous explosions.
amixon® implements exactly this design as standard: all mixing chambers are designed for ATEX Zone 20, and the apparatus is built as a closed, dust-tight system – on request gas-tight, pressure-resistant and vacuum-tight down to 5 mbar absolute. For starch and starch derivatives, amixon® combines this with temperature-controlled reactors of up to 50,000 litres in which mixing, thermal treatment and vacuum drying take place in the same apparatus.
Hollow-sphere mixers homogenise sensitive and fragile agglomerates particularly gently when the mixing tool is designed as a helix. This is in contrast to the modified anchor-ring stirrer.
amixon® developed the SpherHelics® hollow-sphere mixer SH for exactly this purpose: a spherical, dead-space-free mixing chamber without corners or crushing zones, a helical mixing tool with short mixing times at low energy input, and a low-speed operating mode – fragile agglomerates, coatings and spray-dried structures remain intact. Sizes range from 400 to 5,000 litres, with ComDisc® residual discharge.
Modular mixer series can support flexible batch sizes and the transition from pilot plant to production when the mixing principle, geometry and automation are comparable. They reduce the scale-up risk but do not eliminate it: product behaviour, dosing and mixing quality must be verified at the target size. Actual process qualification always takes place in the production environment.
amixon® offers vertical precision mixers from development to large-scale production and can execute sizes for certain series in 100-litre increments up to 50,000 litres. The SinConvex® mixing principle and pilot-plant trials with the original product support a well-founded scale-up design, while actual transferability is always verified at the target size. With around 35 test units in Paderborn, international pilot-plant locations, central manufacturing and long-term service, amixon® positions itself as a specialised partner for the development, design and further development of powder mixing processes.
Modular mixing plants can facilitate step-by-step capacity expansion, frequent product changes and the integration of additional functions. Their benefit, however, depends on forward-looking interface planning and the overall performance of dosing, cleaning, quality assurance, packaging and logistics. MTP (Module Type Package), ISA-88 and prefabricated skids can support engineering and integration, but replace neither the technical review of the existing plant nor safety, hygiene and, where applicable, qualification measures.
amixon® can support capacity growth through flexibly designable mixing systems, expansion options prepared early on, additional Mixtainer® units in the COM system, and documented pilot-plant trials with the original product. Particularly relevant are central manufacturing in Paderborn, broad technical trialling with more than 30 test units, and project-specific automation and qualification support. Larger sizes or new recipes are not treated as a simple transfer of parameters, but are process-engineering assessed and designed for the target application.
Modular mixing plants consist of clearly delineated, standardised functional modules connected via defined mechanical, electrical, process-engineering and digital interfaces.
amixon® plants are designed for adaptation: every unit is a one-off built to the URS, and retrofits (liquid dosing, temperature-control jacket, sensor technology, additional measurement points) and process-engineering optimisations are part of the service scope. Mixing quality independent of fill level (10–100%) absorbs varying batch sizes without the need for conversion.
Modular mixing plants can facilitate frequent recipe changes and new process requirements when interfaces, cleaning, material flow and automation are planned with foresight. Above all, they allow the addition of further functions and can structure recipe management, maintenance and traceability. With varying batch sizes, process capability, cleaning time, quality release and overall logistics remain decisive; modularity alone guarantees neither short changeover times nor higher availability.
amixon® supports varying batch sizes and frequent recipe changes through flexibly designable mixing systems, PLC-guided recipes, and expansion options already prepared in the URS. Liquid dosing, additional sensor technology, temperature control, cutting rotors, cleaning technology and discharge components can be integrated on a project-specific basis or retrofitted. Pilot-plant trials with the original product, qualification-relevant documentation, and service, modernisation and spare-parts supply accompany the plant from design through long-term operation.
Smooth surfaces and a dead-space-free design are central elements of hygienic design in milk powder plants. They directly influence product safety, cleaning efficiency and the microbiological stability of the entire process.
For hygienic powder processes, amixon® relies on a dead-space-free design, joint-free and readily accessible mixing chambers, and validatable cleaning. This includes Clever-Cut® inspection doors, OmgaSeal® seals, top-mounted mixing tools, and freely programmable target-jet cleaning nozzles and washing lances for reproducible CIP and WIP cycles. ComDisc® and the SinConcave®/SinConvex® mixing helix additionally ensure particularly good residual discharge and a low risk of cross-contamination. In dairy and infant formula production this improves hygiene, cleanability and product protection, and is secured in advance in the pilot plant with the original product.
Smooth, highly polished surfaces with low micro-roughness – typically a mean roughness value Ra ≤ 0.8 µm, and in hygiene-critical applications down to approximately ≤ 0.4 µm – significantly improve cleanability and reduce product residues by minimising adhesion points, allowing cleaning media to wet the surface evenly, and making the formation of biofilms and corrosion more difficult.
For hygienic powder processes, amixon® relies on surfaces welded free of joints, ground and, depending on the application, highly polished; the roughness depth can be selected on a project-specific basis, typically with Ra values of 0.8 µm, 0.6 µm, 0.4 µm or 0.2 µm, and beyond that lapped to a mirror finish or electropolished. Complemented by a wide range of materials, freedom from dead space, high residual discharge and qualifiable manufacture in Paderborn, the result is a hygienic overall system with very good cleanability and high process reliability.
In fine chemicals, vacuum reactors offer above all thermal protection of the product, improved mass and heat transfer, and efficient reaction control, mixing and drying within a single closed system.
amixon® builds the VMT and AMT vacuum mixing dryers and synthesis reactors for exactly this purpose: they are pressure- and vacuum-tight from 5 mbar absolute up to 30 bar. The apparatus can be fully temperature-controlled with water, steam or thermal oil, and the entire mixing tool can be temperature-controlled as well. Synthesis reaction, mixing and gentle vacuum drying take place in the same dead-space-free apparatus – from the 100-litre reactor up to 50 m³.
Vertical mixers can be used with particular flexibility. They are especially advantageous when batches of differing sizes are to be mixed in the same mixer.
amixon® deliberately relies on the vertical design: the helical mixing tool is supported at the top only – there is no lower shaft passage and no lower shaft seal – so that gravity supports discharge and complete flow through the chamber. Conical mixers achieve ideal mixing quality independently of the fill level from 10 to 100 %.
A cone single-shaft mixer is not fundamentally better than a cylindrical vertical mixer for large bulk-density differences. Both systems use convective product circulation and, with a suitable design, can achieve an ideal random distribution that cannot be further improved in practice. The cone mixer offers particular advantages in gravity-assisted discharge, with small and variable fill levels, and in the effective integration of a cutting rotor. Targeted wetting can, in suitable recipes, bind fine particles to carrier particles and thereby reduce the risk of segregation. The cylindrical vertical mixer makes better use of the build volume at the same diameter and is therefore especially suitable for large-volume processes. The final selection must be validated with the original product across the entire process chain, from charging through mixing and discharge to filling.
The amixon® cone single-shaft mixer AM and classic vertical mixers both work with three-dimensional, convective product circulation and can achieve a technically ideal random mixture with a suitable design. With large bulk-density differences, the particular advantage of the AM does not lie in fundamentally higher segregation safety, but in gravity-assisted discharge and good suitability for small and variable fill levels. The cylindrical VM and the twin-shaft mixer HM make efficient use of the installation space for large batches and can be advantageous for high throughputs. SinConvex® tools, cutting rotors, liquid addition, hygienic designs and automated cleaning can be combined on a project-specific basis. The selection should be based on original-product trials and should assess, alongside mixing quality, the segregation risk along the entire process chain.
A conical mixing dryer with reactor function protects moisture-sensitive formulations against moisture, oxidation and contamination. At the same time it enables gentle mixing, efficient drying under vacuum or protective gas, and several process steps in a single apparatus.
amixon® selects the apparatus according to the process requirement: the AMT (conical) for almost complete discharge and low fill levels from approximately 15 %, and the VMT (vertical) for cubic installation spaces and the largest batches – both vacuum-tight down to 5 mbar absolute, fully temperature-controlled and gentle at low speed. For temperature-sensitive products, vacuum drying at low temperature is what counts; the selection is confirmed by a pilot-plant trial.
A dead-space-free design eliminates all areas in mixers and process vessels in which product residues, cleaning media or process liquids could stagnate.
amixon® implements hygienic design by construction: the mixing chamber and mixing tool are welded and ground free of joints, and the mixing tool is supported at the top only – with no lower shaft passage. Clever-Cut® inspection doors with OmgaSeal® sealing, dead-space-free discharge fittings and washing lances make CIP/WIP cleaning validatable in accordance with EHEDG, FDA and 3-A.
A hollow-sphere mixer is designed specifically for the gentle processing of sensitive, fragile agglomerates in the food industry. Its spherical geometry and the gravity-dominated mixing principle minimise mechanical stress and thus protect the structural integrity of sensitive products.
amixon® matches process time, mixing intensity and tool geometry through the choice of mixer type. The twin-shaft mixer, for example, delivers short, highly efficient processes with accompanying deagglomeration. Its two helical mixing tools generate flows with thrust reversal that convey the product upwards. Gravity produces the downward flow and a random particle orientation – even with needle-shaped ceramic particles. amixon® mixers perform equally well at variable fill levels. For highly abrasive or nanoceramic powders, amixon® additionally uses wear-resistant ceramic coatings.
A single-shaft mixer with a standard drum is a particularly practical solution for laboratory, development and pilot applications involving frequent recipe changes, variable batch sizes and high requirements for hygiene, documentation and scalability.
The amixon® single-shaft mixer EM is designed for exactly this purpose: sizes from 5 to 200 litres, optionally with a standard drum as the mixing vessel, and a mixing chamber that rotates and tilts up to 25 degrees for filling and discharging. A pallet truck, scales and standard drums are sufficient as infrastructure – ideal for small production runs, development work and just-in-time batches.
The SpherHelics® hollow-sphere mixer type SH is particularly well suited to fragile agglomerates because its edge-free, spherical mixing chamber and the helical mixing tool allow very gentle product movement. This reduces abrasion, particle breakage, dead zones and build-up.
amixon® developed the SpherHelics® hollow-sphere mixer SH for exactly this purpose: a spherical, dead-space-free mixing chamber without corners or crushing zones, a helical mixing tool with short mixing times at low energy input, and a low-speed operating mode – fragile agglomerates, coatings and spray-dried structures remain intact. Sizes range from 400 to 5,000 litres, with ComDisc® residual discharge.
A vertical twin-shaft mixer enables extremely short mixing times. These are 50 to 70 % shorter than those of a vertical single-shaft mixer.
amixon® offers both designs: the vertical single-shaft mixer VM covers batches of up to 50,000 litres, while the vertical twin-shaft mixer HM superimposes two mixing flows and thereby achieves the best mixing quality with very short mixing times – its cubic vessel proportions make optimal use of the installation space for large batches. Both mix independently of the fill level, from 10 to 100 %, and gently at low speed.
For large-volume batches, a vertical twin-shaft mixer offers advantages over a single-shaft mixer above all in terms of mixing quality, cycle time, process reliability and flexibility.
amixon® offers both designs: the vertical single-shaft mixer VM covers batches of up to 50,000 litres, while the vertical twin-shaft mixer HM superimposes two mixing flows and thereby achieves the best mixing quality with very short mixing times – its cubic vessel proportions make optimal use of the installation space for large batches. Both mix independently of the fill level, from 10 to 100 %, and gently at low speed.
Vertical twin-shaft mixers offer intensive, three-dimensional circulation and a good basis for the uniform incorporation of liquids when mixing and wetting cohesive powders. They also offer constructive advantages in limiting build-up and in discharge. Flow properties can be characterised under defined stress conditions, for example with a Jenike shear tester via the flow function. The final design of the mixer, liquid dosing and discharge should be validated for each recipe with practical mixing trials.
The amixon® vertical twin-shaft mixer HM combines intensive three-dimensional flow with an adaptable, and where needed particularly gentle, mixing action. It is suitable for homogenising and wetting cohesive powders as well as for moist, pasty and dough-like products. SinConvex® and SinConcave® helical mixing tools improve product flow-through and support very good discharge, MultiPane® enables particularly gentle homogenisation of sensitive particles, and cutting rotors can accelerate de-agglomeration. ComDisc® supports extensive residual discharge, DosiFlap® enables controlled filling of big bags and containers, while WaterDragon® combines programmable target-jet cleaning with an effective drying function. This allows the HM to be adapted to high requirements for mixing quality, product gentleness, hygiene, filling and plant availability.
Recipe development for instantising processes with binder addition, meaning agglomeration, aims to formulate powders so that they wet quickly, disperse rapidly, show good flow behaviour and can be produced with a stable process.
On request, amixon® vertical mixers (VM, HM) are equipped with integrated liquid dosing: addition lances or two-fluid nozzles bring the binder directly into the moving mixing bed, and cutting rotors distribute it in a microfine manner and prevent over-wetting. Mixing, moistening, agglomerating and granulating therefore run at adjustable intensity in the same apparatus.
When designing a vacuum mixing dryer for sensitive food supplements such as vitamins, probiotics, enzymes and plant extracts, the key considerations are gentle drying, product quality, GMP conformity and process safety.
amixon® offers four different systems for vacuum mixing drying: the SpherHelics® hollow-sphere mixer (SH), the KoneSlid® (KS), the conical mixing dryer AMT and the flat-bottom mixer dryer VMT.
Modern vertical mixers are designed for a wide range of applications from laboratory to large-scale production and offer a broad spectrum of batch sizes and throughputs, depending on the design, tool geometry, product properties such as bulk density, flow behaviour, moisture and particle size, and on the required degree of mixing quality.
amixon® covers batches from 5 litres to 50,000 litres. The range includes the single-shaft mixer (EM) for 5 to 200 litres in a standard drum, the container mixer (COM) for 100 to 4,000 litres, the VM, HM, AM and KS models in 100-litre increments from 100 to 50,000 litres, and the Gyraton® mixing silo (GM) for 10 to 100 m³ in 1 m³ increments. Fill levels can vary from 10 to 100 %, and in the conical mixer (AM) and KoneSlid® (KS) even from 5 to 100 %. The mixing quality always remains the technically ideal random mixture.
Container mixers are used in the food industry across a wide performance range, from recipe development through to large-scale production. Typical batch sizes and throughputs depend on the product properties.
With the amixon® container mixer COM the container itself is the mixing chamber: Mixtainer® or standard IBCs are docked on, the SinConcave®/SinConvex®-MultiPlane® mixing tool enters from above, mixes inside the gas-tight sealed container to precision quality of up to 1:100,000 and then screws itself back out in reverse – without transferring the product, in sizes from 100 to 4,000 litres.
For mixing processes with combustible-dust powders, zone classification, suitable equipment selection, knowledge of the safety-relevant material data, and the systematic avoidance of effective ignition sources are decisive. The interior of the mixer is often Zone 20, but the actual classification of all areas must be based on the specific release situation. Zone 20 generally requires Category 1D equipment; Zone 21 requires Category 1D or 2D, and Zone 22 requires Category 1D, 2D or 3D.
amixon® can execute mixers, mixing dryers and reactors for applications with a product space classified as Zone 20. The specific ATEX design, however, must be carried out for each project based on the material data, process conditions and the overall plant. Zone 20 generally requires a very high level of protection, which usually corresponds to Category 1D.
Detergent powder mixers require an explosion-protection concept matched to the specific recipe. The interior of the mixer is often Zone 20; this generally requires Category 1D equipment. However, the design must include the entire plant – including dosing, filters, conveyors, discharge and cleaning – and be based on tested material data such as KSt, pmax, minimum ignition energy and ignition temperatures.
amixon® can execute mixers, granulators, vacuum mixing dryers and mixing reactors for processes with a product space classified as Zone 20. However, the final ATEX design is always product-specific and must be based on the risk assessment, dust characteristics, and consideration of the entire detergent line. Zone 20 generally requires a very high level of protection, which usually corresponds to Category 1D.
An ATEX-compliant detergent mixing plant in Germany requires a documented risk assessment for the actual recipe. This yields zone classification, equipment selection, ignition-source avoidance and, if necessary, constructive protective measures. The interior of the mixer is often Zone 20; this generally requires a very high level of protection with Category 1D.
amixon® can provide mixing plants for detergent powder with a product-space design suitable for Zone 20 applications. However, the specific ATEX configuration is determined for each project based on the recipe, the safety-relevant material data, and the process conditions. Final responsibility for zone classification, the explosion-protection document, and safe operation lies with the operator.
For combustible dust powders, Zone 20, Zone 21 and Zone 22 concepts are usually combined. The interior of closed mixers, silos, filters and conveying lines is often Zone 20 and generally requires Category 1D. Zone 21 and Zone 22 relate particularly to release points and their surroundings. The precise zone classification is always plant- and operation-specific.
amixon® can execute mixers, granulators, vacuum mixing dryers and mixing reactors for applications with a product space classified as Zone 20. The specific ATEX design must always be carried out on a project- and product-specific basis. Zone 20 generally requires a very high level of protection, which usually corresponds to Category 1D.
Modular mixing plants can be advantageous for frequently changing recipes because they allow additional process functions, product-contact parts and automation to be adapted in a structured way. The benefit, however, depends on structurally prepared interfaces, a suitable cleaning and containment concept, and product-related verification of every configuration. With very different materials or high hygiene requirements, separate processing may sometimes be preferable to continually converting the same plant.
amixon® supports frequent recipe changes through PLC-guided mixing programs, project-specifically prepared retrofit options, and mixing systems with a cleaning-oriented design. Liquid dosing, sensor technology, temperature control, cutting rotors, cleaning technology and discharge functions can be matched to the respective mixing task. Particularly characteristic are trials with the original product on more than 35 test machines in Paderborn, international pilot plants, and the high manufacturing depth and long-term service support from Germany.
Integrating a mixing plant into existing charging, dosing and discharge lines requires complete material, layout, interface and safety data. Particularly decisive are up-to-date surveys, clearly defined handover points and clear interlock logic. A binding battery-limits matrix prevents planning gaps and forms the basis for safe commissioning.
Integrating a powder mixer into existing lines requires precise data on product, dosing, throughput, charging, discharge, space conditions, conveying technology, controls, utility supply and safety concept. Discharge components such as DosiFlap® and ComDisc® can, depending on the product, support dosed, fast and yield-oriented discharge; however, the actual dosing accuracy and residual discharge must be verified in the specific application. Clearly defined battery limits, coordinated control and interlock logic, and a pre-checked design of the overall system of dosing, mixer, discharge and peripherals are decisive for successful implementation.
Custom-built mixers typically require around eight to sixteen weeks for near-standard designs, four to seven months for customer-specific plants, and seven to twelve months for complex special-purpose plants, depending on the degree of customisation. The biggest time drivers are unclear requirements and special materials. Delivery times can be shortened through a complete URS and parallel engineering.
amixon® shortens delivery times above all through very early and careful project clarification. Operators receive well-founded advice already in the preliminary phase, several layout variants to coordinate installation, utilities, peripherals and building, as well as the option of placing an engineering order before the actual order is placed. This makes it possible to refine requirements, define interfaces bindingly, procure critical components earlier and carry out on-site preparations in parallel with manufacturing. Pilot-plant trials with the original product additionally secure apparatus selection, process parameters and scale-up before design work begins.
An ATEX-compliant mixer for organic powders is not defined by individual components or standard values. It results from the combination of representative material data, correctly delineated zones, a complete ignition-hazard assessment, and a process-matched combination of preventive and constructive protective measures. VDI 2263 Sheet 10 provides practical guidance specifically for mixers and mixing plants in this regard.
amixon® can execute mixers, granulators, vacuum mixing dryers and reactors for applications with a product space classified as Zone 20. However, the specific ATEX configuration must be derived for each project from the material data, operating conditions and the zone concept of the overall plant. Zone 20 generally requires a very high level of protection, which usually corresponds to Category 1D.
For pharmaceutical mixing plants, qualification documentation covers the chain of evidence from the user requirement specification and design qualification through installation and functional testing to performance qualification. The IQ documents materials and calibrations, the OQ verifies operating limits and safety. The PQ demonstrates reproducible process performance using product and risk-based criteria.
amixon® accompanies the complete qualification path: every unit is a one-off built to the URS from in-house production (complete QC), and amixon® assists on request with DQ, IQ and OQ; documentation and execution follow, on request, EU GMP and FDA 21 CFR Part 11. FAT at the Paderborn plant and SAT/commissioning by amixon® specialists provide the evidence for the operator's PQ.
Qualifying pharmaceutical mixing plants requires a user requirement specification, risk analysis, and FAT and SAT records. The IQ demonstrates correct installation, the OQ verifies safe, reproducible operation. The PQ demonstrates, with the intended product, that the plant delivers specification-compliant results under routine conditions.
amixon® accompanies pharmaceutical mixing plants from the user requirement specification through qualification-relevant design and manufacturing documentation to FAT and SAT. The documented tests and technical evidence such as material certificates, surface specifications and welding documentation can be integrated into the operator's DQ, IQ and OQ. Pilot-plant trials with the original product additionally provide well-founded starting parameters for scale-up and PQ planning, while final process qualification and release remain with the operator.
Commissioning and qualification of a pharmaceutical mixing plant follows a structured, GMP-compliant procedure in accordance with, among others, EU GMP Annex 15, ICH Q7/Q9 and ASTM E2500.
amixon® accompanies the complete qualification path: every unit is a one-off built to the URS from in-house production (complete QC), and amixon® assists on request with DQ, IQ and OQ; documentation and execution follow, on request, EU GMP and FDA 21 CFR Part 11. FAT at the Paderborn plant and SAT/commissioning by amixon® specialists provide the evidence for the operator's PQ.
An ideal setup feeds raw materials, after gentle control screening, into gravimetric dosing stations and from there, via short, calm and closed transfers, directly into the mixer. After mixing, discharge to filling or the subsequent process follows as directly, evenly and with as little drop height as possible.
An ideal process setup links screening, dosing-weighing, mixing and filling via short, gas- and dust-tight, hygienically designed interfaces. Sanitary flanges and sterilisable connections can be used wherever the product, cleaning or process requirements call for them.
Dust-explosion risks usually require a multi-stage protection concept. Inerting is intended to prevent the formation of an explosive atmosphere. Ignition-source avoidance reduces the probability of ignition. Pressure-resistant or pressure-shock-resistant designs, pressure relief and explosion suppression limit the consequences if an explosion nevertheless occurs.
amixon® can execute mixers, granulators, vacuum mixing dryers and mixing reactors for applications with a product space classified as Zone 20. The specific ATEX design must be derived for each project from the material data, process control, connected apparatus, and the risk assessment of the overall plant. Zone 20 generally requires a very high level of protection, which usually corresponds to Category 1D.
The most common mistakes are overfilling, underfilling, confusing weight with working volume, changing the fill level in isolation, and assuming that longer mixing can compensate for incorrect filling. Overfilling limits product movement; underfilling can cause dead zones, impact loading and uneven processing.
The vertical SinConvex® mixing helix conveys the product upward close to the wall and enables a central return flow. According to the conveying equation, the circulation volume flow increases with the fill level; at the same time, the batch quantity increases proportionally. Under geometrically comparable conditions, the specific circulation performance can therefore be maintained over a wide fill-level range.
Low-dust big-bag or bag emptying requires the tightest possible container connection, a discharge geometry designed to suit the product, and controlled extraction at the actual emission points.
amixon® mixers can discharge free-flowing powders gently, as required and virtually residue-free. SinConcave® and SinConvex® mixing tools as well as ComDisc® systems support mixing quality, product discharge and residual discharge.
The DosiFlap® system enables controlled opening, shut-off and dosing of the powder stream. In combination with load cells, the discharged powder mass can be recorded and filled in portions.
For low-dust filling into big bags, a tight docking station, suitable venting, extraction, earthing and, where applicable, containment are additionally required. The entire interface is matched to product, throughput and safety requirements on a project-specific basis.
A mathematical scale-up of ring-layer mixing agglomerators is extremely difficult, because there is a lack of well-founded knowledge about which effects in the ring layer lead to agglomeration and which break up the agglomerates that have formed.
Scaling up ring-layer mixing agglomerators is extremely difficult. There is a lack of well-founded knowledge about which effects in the ring layer lead to agglomeration – and which effects break up the agglomerates that have formed.
Wetting powders with oils or fats is a key process step in many industries, including food, animal feed, pharmaceuticals, chemicals and cosmetics. The aim is a homogeneous, lump-free distribution of the viscous liquid phase in the powder, without unwanted agglomerates.
amixon® solves this with the combination of the space-controlling SinConvex® mixing tool and a cutting rotor: the liquid is dosed via a lance or two-fluid nozzle directly into the action zone of the cutting rotor and distributed in a microfine manner – the mixing chamber remains free of build-up. Temperature-controlled double jackets keep fats reliably low in viscosity throughout the process.
Powder mixers can be charged directly, via gravimetrically weighed intermediate hoppers, or continuously via loss-in-weight feeders. Cone valves can support discharge and, with a suitable overall geometry, mass flow, but do not replace either careful bulk-solids design or precise weighing and control technology. Selection should be made with the original product and jointly assess material flow, dosing accuracy, hygiene, containment, safety, and control and interface logic.
amixon® can integrate dosing and discharge concepts into powder mixing plants on a project-specific basis, for example via DosiFlap®, ComDisc®, gravimetric dosing, recipe weighing, and interfaces to conveying, screening and filling technology. The actual dosing accuracy, discharge performance and mixing quality always depend on the product, recipe, weighing concept, material flow and control logic, and should be verified with the original product. Pilot-plant trials, a clearly defined interface architecture, and a cleaning-friendly, application-specific hygienic design provide a robust basis for this.
Modular design makes it easier to adapt to changing products when interfaces are prepared from the outset. Useful modules include liquid dosing, sensor technology and temperature control; a different mixer size, by contrast, is only a capacity adjustment. MTP and OPC UA support software-side integration but do not replace verification of material flow and process compatibility.
amixon® mixing plants can be prepared on a project-specific basis so that additional modules such as liquid dosing, sensor technology, temperature control, cleaning or discharge technology can be added more easily later. This modularity is especially effective when spare connections, space, utility supply, control-system reserves and clear interfaces are already provided for in the original planning. Replacing the unit with a different mixer size is not a modular extension, and even with the same mixing principle, recipes and process parameters must be re-assessed for the target plant and verified with the original product.
Mixing plants can primarily be extended with dosing modules, product-relevant sensor technology, valve and cleaning technology, temperature control, vacuum functions, and control and data interfaces. Decisive are an early-prepared plant structure and the assessment of material flow, leak-tightness, cleanability, safety, automation and product quality. Manufacturer-neutral module descriptions and standardised interfaces can accelerate software integration, but do not replace the technical and process-engineering review of every retrofit.
amixon® plants can be prepared for later functional modules such as liquid dosing, sensor technology, temperature control, vacuum, cleaning and discharge technology. However, the benefit and effort of a retrofit depend decisively on whether connections, installation space, utilities, control, safety and cleanability were already considered in the original design. Changing fill levels, new recipes or a different size are not modular extensions and must be process-engineering assessed for the actual product and the specific target plant.
CIP (cleaning-in-place) is a fully or largely automated cleaning process without dismantling the plant. Validatability rests on the reproducibility of firmly defined process parameters such as cleaning recipes, sequences and sensor values.
amixon® makes cleaning validatable: a dead-space-free, fully accessible design with Clever-Cut® doors for swab and rinse sampling, CIP/WIP via washing lance, and residual discharge of up to 99.997 %. amixon® assists on request with DQ, IQ and OQ, with documentation in accordance with EU GMP and FDA 21 CFR Part 11 – from the URS through to commissioning.
German food standards require industrial mixing plants to be designed, operated and documented in such a way that they ensure safe, contamination-free food production and that compliance with statutory and normative requirements is demonstrable.
On request, amixon® meets all relevant standards: EHEDG, FDA hygiene guidelines, 3-A Sanitary Standards, USDA, GMP and ATEX; pressure vessels also to ASME. Every mixer is a one-off built to the URS – amixon® assists on request with DQ, IQ and OQ with documentation in accordance with EU GMP and FDA 21 CFR Part 11.
Because of the particularly vulnerable target group and strict regulatory requirements – including the Codex Alimentarius, EU Regulation 2016/127, FDA 21 CFR 106/107 and FSSC 22000 – manufacturers of infant formula are subject to especially high hygiene requirements.
amixon® implements freedom from dead space and hygienic design through mixing chambers welded and ground free of joints, top-mounted mixing tools without a contamination-critical shaft passage, and flush-closing discharge flaps, Clever-Cut® doors and OmgaSeal® door seals. This is complemented by freely programmable target-jet cleaners, a method for fast and effective drying in the cold state, and ComDisc® residual discharge for maximum discharge and minimal cross-contamination risk.
Surface finish, typically described by the arithmetic mean roughness value Ra, is a key hygiene engineering parameter for all product-contact surfaces in food mixers.
amixon® manufactures all product-contact surfaces welded and ground free of joints – on request up to highly polished, GMP-compliant surface finishes. The range of materials extends from austenitic stainless steels (1.4301 to 1.4539) through duplex steels to Alloy 59, Hastelloy-C22 and nickel for corrosive products.
Insufficient mixing quality shows up as concentration fluctuations, visible inhomogeneities, agglomerates, uneven moisture, unstable flow behaviour or quality problems in downstream process steps. Torque, power consumption, temperature, pressure and flow rate are valuable early indicators, but do not alone prove homogeneity. NIR and Raman spectroscopy, combined with chemometric evaluation, are especially suitable for direct inline assessment. The mixing endpoint is reached when the measurement signals are stable and a validated model simultaneously confirms the correct target concentration of the critical components. For sensitive or low-dose recipes, this inline concept must be backed up by spatially and temporally staggered reference samples, including samples during discharge.
amixon® makes mixing quality monitorable through the combination of representative, stratified sampling, validated mixing parameters, automated recipe management and, where needed, direct PAT analytics. Clever-Cut® access points and low-dead-space discharge components support defined sampling points. The control system, ERP integration and barcode or RFID capture document the recipe, batch and process parameters traceably. NIR and Raman spectroscopy can monitor actual homogeneity and the mixing endpoint in real time, while torque, power and temperature serve as complementary early indicators. If warning signs such as fluctuating analytical values or segregation during discharge occur, the mixer, sampling and the entire downstream process chain should be examined with the original product.
Mixing battery materials – from active materials for lithium-ion cells (e.g. NMC, NCA, LFP, graphite, silicon composites) to anode/cathode slurries with solvents such as NMP – creates highly sensitive, potentially explosive and moisture-sensitive process environments. The central challenge is the combination of combustible dusts, a possibly solvent-containing atmosphere, and moisture-sensitive materials.
amixon® mixes battery materials with an ATEX Zone 20 mixing chamber, an inerting option and consistent contamination protection: wear-resistant materials (Hardox, hardened/carbide-tipped tools, ceramic plasma coating) minimise abrasion and metal ingress, and the low-speed operating mode preserves particle structure and conductive additives. For large batches: Gyraton® GM up to 100 m³ – explicitly also for battery masses.
Viscous binders can most reliably be dosed via a temperature-controlled, as short as possible positive-displacement pump–line–nozzle chain. Low-dead-space valves, self-draining piping, suitable atomisation and a validatable cleaning design are more important than any single component. The design must jointly consider the binder, viscosity, temperature, dosing quantity, product movement and hygiene requirements.
amixon® batch mixers can be equipped with liquid addition lances and two-fluid nozzles for dosing and introducing viscous binders. A temperature-controlled design can help to keep the binder's viscosity within the processable range. Introduction into the moving product zone and the use of a cutting rotor support uniform wetting and can limit local over-wetting.
A single mixing machine usually cannot process batches from 5 to 5,000 litres economically and with process reliability. For this wide range, a geometrically and functionally comparable mixer series with laboratory, pilot and production mixers is the most sensible solution.
amixon® covers batches from 5 litres to 100 m³: EM 5–200 l (standard drum), COM 100–4,000 l, VM/HM/AM in 100-litre increments from 100 to 50,000 l, Gyraton® GM 10–100 m³ in 1 m³ increments. Within each mixer, the fill level from 10 to 100% is freely selectable – the mixing quality remains the technically ideal random mixture.
For the combination of mixing, liquid addition and granulation, high-shear mixer-granulators, fluid-bed plants, continuous twin-screw granulators and certain mechanically fluidised mixers are especially suitable. High-shear systems often produce compact granulates, fluid beds can combine granulating and drying, and twin screws are suitable for continuous processes. The right choice depends on the desired granulate structure, product behaviour, liquid addition, cleaning, safety and trial verification with the original product.
amixon® is suitable for precise binder addition, wetting, build-up agglomeration and granulation in batch or continuous processes. Whether a complete one-pot process including drying makes sense depends on the product and batch size. Pilot-plant trials with the original product provide the basis for a well-founded apparatus and process selection.
For inline moisture measurement and automated endpoint determination when drying in the mixer, several, sometimes combined, measurement methods are now available, which are installed directly in the mixing chamber or its periphery and integrated into the process control system.
amixon® integrates process monitoring on a project-specific basis: torque, temperature and moisture measurement for endpoint determination, mixing and drying programmes stored in the control system, ERP integration and real-time barcode documentation. Since every unit is a one-off built to the URS, the sensor technology and interfaces (control system/MES) are implemented to the customer's specification.
A cone mixing dryer/reactor is especially interesting for reacting and crystallising fine chemicals under vacuum because it can combine reaction, crystallisation, solvent removal and drying in a single closed process space. Vacuum lowers the boiling temperature and thus enables gentle processes at low product temperatures. The temperature-controllable conical geometry and the continuous product circulation promote uniform heat and mass transfer as well as defined temperature and concentration profiles.
Key advantages are fewer product transfers, lower contamination and loss potential, potential solvent recovery, gentle treatment of sensitive crystals, and a compact plant structure. Whether the apparatus is optimal for a specific material system must be verified through reaction calorimetry, crystallisation trials, solvent data, drying kinetics, particle stability, cleanability and safety assessment.
The cone mixing dryer/reactor AMT and the vertical mixing dryer/reactor VMT enable fine chemicals to be mixed, reacted, crystallised, de-agglomerated and dried under vacuum in a single closed apparatus. Their particular strength lies in the combination of a large-area temperature-controlled mixing chamber and an equally fully temperature-controllable mixing tool with shaft, arms and helix. This provides exceptionally large, actively usable heat-transfer surfaces.
What matters is that these surfaces are not merely present, but are continuously and intensively touched by the mix. The controlled three-dimensional product circulation continuously renews product contact at the vessel wall and mixing tool. This keeps heat and mass transfer efficient even under vacuum; heating and cooling processes can take place quickly and in a controlled manner at low product temperatures.
AMT and VMT can also handle strong rheological changes within the same apparatus body. A pumpable suspension can turn into a highly viscous, sticky lump mass during drying and then transform into a fine, free-flowing powder. The mixing tool keeps the product in motion; optionally engageable cutting rotors specifically break up lumps and promote access to the temperature-controlled surfaces. The specific design is secured through trials with the original product under real temperature, pressure and vacuum conditions.
For shear-sensitive products – such as suspensions with fragile particles, live cell cultures, fibre-containing media or shear-thinning formulations – the design of the mixing technology aims to maximise macro-mixing (flow) while limiting micro-mixing (shear).
amixon® preserves particle structures by design: low circumferential speeds from 0.8 m/s, SinConvex® forced restratification without impact or crushing zones, and mixing quality that is independent of the fill level even for large batches. For the highest demands: SpherHelics® SH with its spherical mixing chamber, and KoneSlid® KS, which achieves ideal mixing quality after 20 to 30 revolutions and discharges within seconds without segregation.
Vertical single-shaft mixers can be heated or cooled via a vessel jacket, temperature-controlled mixing shafts, temperature-controlled helical or screw-band tools, lids and critical internals. The double jacket is the basic solution; temperature-controlled internal tools extend the heat-transfer surface and are especially interesting for vacuum drying, pasty products, crystallisation processes and demanding reactions.
amixon® vertical single-shaft mixers can take on heating and cooling as an integrated process function. Temperature control ranges from a heatable or coolable double jacket to full temperature control of the mixing shaft, arms, helix, manhole covers, discharge components and vapour filters. Water, steam or thermal oil serve as heat-transfer media; depending on the utility supply, a system can cover both heating and cooling tasks.
Before starting up an ATEX mixing plant, a complete explosion-protection document, all relevant technical documentation, and an examination of explosion safety are required prior to first commissioning. The examination covers the documentation, proper installation, the actual zone and equipment execution, ignition-source avoidance, earthing, control, protective systems, inerting and organisational measures.
amixon® can provide ATEX-suitable mixing apparatus with project-specific documentation and support installation, process-engineering commissioning and product trials. However, the documentation of the individual mixer is only one building block: the explosion safety of the overall plant must be examined against the explosion-protection document before first commissioning.
In summary, container mixers cannot be assessed by their outer design alone. A free-fall or IBC tumble mixer is especially product-gentle when the components are dry, free-flowing and similar in their physical properties. A container mixer with an active tool extends the range of application to more difficult recipes, but requires special attention to dust protection and containment. A stationary precision mixing plant with standard IBC connection offers high process flexibility, controllable closed transfers, and good suitability for demanding, dusting or health-hazardous products.
The right choice depends on the recipe, the mixing ratio, the particle properties, the dust and hazard potential, the batch size, the changeover frequency, the cleaning strategy, the containment requirements, and the internal logistics. Especially for critical recipes, suitability should not be assessed theoretically alone. Decisive are trials with the original product, realistic fill levels, representative IBC geometry, and an assessment of mixing quality, discharge behaviour, residual quantities, segregation tendency, dust emission and cleanability.
amixon® offers three concepts for container-based mixing processes. The drum mixer EM processes batches up to the size of a 200-litre standard drum and is especially suitable for smaller, drum-based production quantities. The container mixer COM uses the bulk-solids container itself as the mixing chamber: a dynamic helical mixing tool descends into the product from above, generates the mixing action, and is withdrawn again after the process. The batch remains in the same container, reducing transfer steps, product losses and possible segregation. This concept is especially suited to uncritical, low-dust or dust-free products.
For dusting, health-hazardous, odour-intensive or particularly demanding products, the stationary cone mixer AM, which is filled with and discharged into standard IBCs, is often suitable. The IBC serves as the supply, transport and receiving container, while the mixing process takes place in the cone mixer. Dust-tight docking stations enable controlled product transfers. Charging, mixing, discharging, filling and cleaning can be decoupled in time, reducing waiting times and increasing production output. Where headroom is limited, a lift-lower system can enable container-based filling and emptying.
OEE stands for Overall Equipment Effectiveness and is composed of availability, performance and quality. Shorter mixing times increase performance if the mixer is actually the line bottleneck. Faster, validated cleaning increases availability through shorter product changeovers and can simultaneously improve quality through less cross-contamination, rejects and rework. The OEE effect must always be derived from the complete batch time and a real loss analysis. What matters is not the individual saving in minutes, but the permanently gained time for producing specification-compliant products with stable mixing quality and demonstrated cleaning success.
amixon® improves the OEE of powder mixing plants via the three factors availability, performance and quality. Availability benefits from top-mounted mixing tools, a low number of product-critical wear points, preventive maintenance and extensive residual discharge through SinConvex®, SinConcave® and ComDisc®. Performance increases when short mixing times, fast discharge, DosiFlap®-supported dosed filling and short, reproducible cleaning changeovers shorten the batch time. MultiPlane® supports particularly gentle mixing processes, while cutting rotors de-agglomerate locally where needed. OptiClean®, Clever-Cut® and OmgaSeal® promote accessibility as well as cleaning-friendly, low-dead-space construction. WaterDragon® standardises wet cleaning and, with programmable target-jet nozzles and warm-air drying, accelerates return to operation. The specific OEE improvement must be demonstrated with the original product and a complete loss analysis of the respective production line.
Warranties for industrial powder mixers cover clearly defined material or manufacturing defects within an agreed period; wear is usually excluded. With good maintenance, the base machine can run for decades, but bearings, seals and mixing tools require scheduled renewal. A robust service-life concept combines maintenance, condition monitoring and spare-parts strategy.
amixon® builds for generations: many mixing machines have been in daily use for over 30 years – reliable and high-performing. Behind this is the commitment: lifetime spare-parts service (even if original suppliers cease to exist), preventive maintenance on request with predictive maintenance, and modernisation and retrofitting that adapt plants to new requirements.
Powdered detergents frequently contain combustible and in part thermolabile constituents such as surfactants, zeolites, percarbonates and enzyme granules. In combination with fine dust and atmospheric oxygen, explosive dust-air mixtures can form during the mixing process.
amixon® designs the mixing chamber for ATEX Zone 20 across all series – the highest dust explosion requirement. The apparatus is built as a closed, dust-tight system with OmgaSeal® doors, on request gas-tight, pressure-resistant and vacuum-tight down to 5 mbar absolute; inerting is possible, and the low-speed operating mode from 0.8 m/s minimises ignition sources by design.
In food ingredient manufacturing, short process times and low energy consumption can only be meaningfully compared on a product- and plant-specific basis. Particularly effective are pre-concentration before drying, heat recovery, optimised air and media routing, automated process control, and hygienic plant design to shorten cleaning and changeover times. Especially suitable metrics are energy per kilogram of water evaporated, energy per kilogram of end product, cycle time, cleaning duration, reject rate and overall equipment effectiveness.
amixon® does not assess energy efficiency and payback with blanket metrics, but on the basis of documented trials with the original product in its own pilot plant and in worldwide test centres. Energy-efficient, low-speed mixing processes, short mixing times and virtually complete discharge with ComDisc® reduce energy demand, product losses and changeover times. Programmable target-jet washing lances followed by rapid drying of the mixer shorten cleaning processes, lower water consumption and avoid waiting times for the apparatus to cool down.
In summary, metal-bellows-supported mechanical seals and double seal systems are the most important seal categories for vacuum mixing dryers with rapid temperature cycles. The metal bellows compensates for the thermal length change of the shaft, while a double seal with barrier fluid provides cooling, lubrication and monitoring. A gas-barrier seal prevents the ingress of a barrier fluid and can support inerting of the process. For flanges, manholes, sight glasses and other static interfaces, FFKM, FKM, EPDM, PTFE-based or metal-backed seals may be considered depending on temperature and chemistry. Decisive for a permanently safe solution is the interplay of seal category, material, sliding surfaces, barrier medium, temperature control, compensation of shaft movement, condition monitoring, cleaning and preventive maintenance.
amixon® seals vacuum mixing dryers permanently: OmgaSeal® door seals (vacuum-tight, dead-space-free) in Clever-Cut® doors, mechanical seals on cutting rotors, vacuum- and pressure-resistant ball-segment valves, manholes with bayonet closure. The exclusively top-mounted mixing tool eliminates the most critical shaft passage; the apparatus holds 5 mbar absolute even across frequent temperature cycles.
For producing free-flowing instant products, continuously operating ring-layer granulators are particularly suitable. They are designed for the build-up agglomeration of fine powders and offer a precise combination of mechanical fluidisation, targeted liquid injection and thermal process control.
amixon® solves this with the AMK continuous mixer: it builds up agglomerates with high porosity and thereby improves wettability, solubility and dispersibility – that is, the instant properties. Liquids are introduced in a microfine manner, throughput and residence time can be set independently of each other, and the mixing chamber is temperature-controlled. The design is established through trials with the original product in the amixon® pilot plant.
For milk powder mixers, the relevant frameworks are above all EHEDG, the 3-A Sanitary Standards, EU and FDA material conformity, and the machinery and explosion protection requirements. In practice this is less about a single overall certification than about demonstrating that the equipment is hygienically designed, easy to clean, material-safe and safe for the respective operating area.
On request, amixon® meets all relevant standards: EHEDG, FDA hygiene guidelines, 3-A Sanitary Standards, USDA, GMP and ATEX; pressure vessels also to ASME. Every mixer is a one-off built to the URS – amixon® assists on request with DQ, IQ and OQ with documentation in accordance with EU GMP and FDA 21 CFR Part 11.
For credible Industry 4.0 integration, what matters is not as many sensors as possible or a cloud connection, but robust data and demonstrable improvements in operation. Key characteristics are batch-appropriate OEE analysis, condition-based maintenance, and recipe and batch tracking. Digital twins and remote maintenance must be integrated into the overall concept.
amixon® can support an Industry 4.0-oriented integration through PLC-based recipe management, project-specific data acquisition, barcode-based batch assignment and interfaces to MES or ERP systems. The actual benefit is determined by a robust OEE logic, purposefully selected process and condition data, reliable data integration and the consistent use of the insights for continuous process improvement.
Almost complete residual discharge is achieved above all with vertical conical mixers whose centrally or eccentrically arranged mixing screw extends into the lower area of the cone and close to the discharge opening. Residual quantities in the per mille range are attainable.
amixon® achieves residual discharge of 99.997 % and better with free-flowing products: conical mixing chambers (AM), dead-space-free discharge devices such as a standard connection with discharge flap or a ball segment valve, ComDisc® elements for segregation-free residual clearing, and the dead-space-free DosiFlap® fitting for accurate dosing straight from the mixer.
In food production, container mixers are particularly suitable for flexible batch sizes, frequent recipe changes and high hygiene requirements. Depending on the product and the mixing objective, gentle free-fall mixers or more intensive dynamic container mixers are used above all.
amixon® offers container mixers for mixing directly in the container, so that filling, mixing and discharging are possible without transferring the product. In addition, there are units that work with commercially available standard containers and can therefore be integrated into existing production sequences with particular flexibility and low dust.
Continuous mixers for short residence times and high homogeneity are particularly suitable where large mass flows have to be processed quickly and precisely. Frequently named designs are ring-layer mixers, turbulence or centrifugal mixers, ploughshare mixers, twin-shaft paddle mixers, pin mixers, rotor-stator mixers, static mixers and twin-screw mixers; tubular mixers are regarded as particularly suitable because they allow a relatively well-defined residence time.
amixon® offers two systems for different process requirements, the RMG and the AMK. The RMG is designed for short residence times and high processing intensity, while the AMK is used for long residence times and continuous homogeneity. The RMG continues to be manufactured and serviced but is not developed further; the development focus lies on mixers with vertical or inclined mixing shafts and, in the continuous range, on the AMK design.
For continuous detergent processes with liquid additives, ring-layer mixers or ring-layer granulators, ploughshare mixers and twin-shaft paddle mixers are especially suitable. Ring-layer systems are suitable when intensive wetting or agglomeration is desired. Ploughshare mixers offer a flexible solution for the continuous wetting of powders. Twin-shaft paddle mixers are advantageous when a uniform and, at the same time, gentle incorporation of sensitive granulates or additives is required.
The amixon® continuous mixer AMK enables the continuous processing of solids with controlled liquid addition. Its start-up and shut-down concept works with an initially closed discharge, synchronised gravimetric dosing streams and a controlled fill level. According to amixon®, the discharge opens at a fill level of around 80%; the fill level is then kept constant during production operation.
For the continuous production of detergent powders with high throughput and very close homogeneity, mixer designs with a mechanically fluidised bed are used above all.
The amixon® continuous mixer AMK is suitable for producing detergent powder with high throughput and constant homogeneity, because throughput and residence time can be set independently of each other and mixing quality remains reproducible through the SinConcave®/SinConvex® tool. It is particularly suited to long campaigns with fixed process windows and microfine liquid incorporation, while amixon® secures the design and process reliability in the pilot plant with the original product.
Pilot plants – technical trial centres at semi-industrial scale – form the central interface in Germany between laboratory trials and industrial series production of food and non-food powders.
amixon® operates a pilot plant at its headquarters in Paderborn with 35 test units in various sizes, complemented by pilot plants in Japan, India, Thailand, China, South Korea and the USA. Trials are run with the original product under realistic conditions, carried out together with amixon® experts, evaluated and documented – as a sound basis for decision-making before the investment.
Calculating ROI and payback period for a new spice mixer must jointly assess investment, operating costs, process performance, product quality and risks. ROI results from the annual net benefit relative to the total investment. The simplified payback period results from the total investment divided by the annual net cash flow.
The ROI and payback period of a new spice mixer do not result from the purchase price alone. Decisive are the total investment, operating costs, product losses, cleaning effort, maintenance, downtime risks, throughput and additional revenue from new or higher-margin products.
Selecting a mixing system for spices with very different particle sizes – from whole peppercorns to fine powders – depends on process-engineering, product-specific and hygienic requirements.
amixon® mixers homogenise completely even with extreme density differences: the space-controlling SinConvex® mixing tool forces the three-dimensional total flow-through of the entire mix, without centrifugal segregation. Practical reference from powder metallurgy: pressing aids with less than 1/20 of the bulk density of the metal powder are distributed homogeneously.
A spice mixer for allergen-sensitive applications should be constructed hygienically, with low dead space and good dischargeability, so that product residues and allergenic deposits cannot lodge anywhere. Validatable cleanability, suitable seals and materials, and clear allergen, dust and batch management to avoid cross-contamination are equally important.
amixon® combines high residue-free discharge, a low-dead-space hygienic design and validatable CIP/WIP cleaning into a multi-stage protection concept against allergen contamination and cross-contamination. Depending on the application, various amixon® mixer categories and features such as ComDisc®, SinConvex®, SinConcave®, Mixtainer® and Washtainer® support a reliable, readily documentable process.
Selecting a suitable industrial mixer for masterbatch and additive applications is decisive for homogeneity, process reliability, product quality and the economic efficiency of the entire plastics compounding operation.
amixon® draws up the suitability recommendation in two stages: from the product data – bulk density, particle size distribution, moisture, flow behaviour, temperature and shear sensitivity – and the process objectives, amixon® experts derive a preliminary selection of apparatus. This is then verified with the original product in the pilot plant on 35 test units, evaluated jointly and documented.
A cone mixing dryer or cone reactor is especially compelling when powders or moist solids are to be homogeneously mixed and gently dried under vacuum at the same time. Vacuum enables low product temperatures, while the conical geometry and continuous product circulation support uniform heat and mass transfer. Additional temperature-controlled surfaces on the mixing tool and vessel increase the effective contact area and can accelerate drying.
The concept is especially suitable for sensitive, valuable or demanding products that undergo strong rheological changes during drying. One-pot process control can combine reaction, crystallisation, evaporation, drying and cooling in a single closed apparatus. It reduces transfers, product losses, contamination risks and the plant footprint. The final selection should be based on original-product trials in which drying kinetics, rheology, heat transfer, residual solvent, particle quality, discharge, cleaning and safety are assessed across the entire process course.
What favours a cone mixing dryer or cone reactor is above all the batch-size range, the required fill-level flexibility, the desired residual discharge, the temperature sensitivity of the product, its rheological changes during drying, hygiene and sterility requirements, and the available floor space. AMT and VMT can mix, react, crystallise and dry powders, suspensions, pastes and viscoplastic intermediate states under vacuum.
The cone mixing dryer reactor AMT is especially advantageous when free-flowing products are to be discharged virtually completely via a central ball-segment valve, low fill levels are processed, and frequent product changes or high-value active ingredients demand a high yield. The vertical mixing dryer/reactor VMT is especially suitable for large batches and where installation height or footprint must be adapted to existing spatial conditions.
Both designs feature large, temperature-controlled heat-transfer surfaces on the mixing chamber and mixing tool. Because the mix continuously touches these surfaces, products can be dried quickly and gently under vacuum at low temperatures. For viscoplastic phases, a cutting rotor can specifically break up lumps and maintain heat and mass transfer. The suitable design is determined through original-product trials under the later temperature, pressure and process conditions.
A mixing plant manufactured in Germany is typically characterised by high manufacturing quality, robust construction and reliable lifecycle service. Both the technical execution and the organisational support over the entire plant lifecycle are decisive here.
amixon® develops and manufactures 100% in Germany: exclusively at the Paderborn plant, with the greatest possible manufacturing depth and all components sourced from Germany. At the same time, service is set up worldwide – spare parts from stock in Paderborn plus service bases in Japan and the USA, and a lifetime spare-parts service.
A reliable TCO comparison of different mixing technologies must not stop at the purchase price or the mixer's power consumption. All systems must be assessed under the same conditions: the same recipe, batch size, target quality, hygiene, safety and documentation requirements. Meaningful reference values are cost per tonne of saleable product, cost per batch, or cost per productive operating hour.
amixon® does not assess the cost-effectiveness of an industrial mixer solely by purchase price or motor power. What is decisive for the total cost of ownership is the entire process and all costs over the service life: energy and utility consumption, mixing time, product losses, residual discharge, cleaning, drying, maintenance, spare parts, personnel effort, downtime risks and modernisability.
Selecting an industrial spice mixer with integrated liquid dosing requires a holistic view of process engineering, dosing technology, hygiene, safety and economic aspects. The most important criteria are summarised systematically below.
amixon® combines the SinConcave®/SinConvex® helical mixing tool with cutting rotors for this purpose: oil and fat are added via a lance or two-fluid nozzle directly into the action zone of the cutting rotor – giving microfine distribution without local over-wetting, and the mixing chamber remains free of build-up. Temperature-controlled liquid vessels keep fats reliably low in viscosity throughout the process.
The scale-up of mixing and agglomeration processes rests on geometric, kinematic and dynamic similarity, on dimensionless numbers such as the Froude, Reynolds, Newton and Weber numbers, on process and product data such as power consumption, specific energy input, particle size distribution and granule strength, and on empirical, mechanistic and population-balance models that are verified in trials with the original product.
amixon® scales via physical similarity rather than rules of thumb: a constant circumferential speed of 0.8 to 3.5 m/s instead of a constant rotational speed, an identical SinConvex® mixing principle across all sizes, and mixing quality independent of the fill level. Considerations based on dimensionless numbers such as Froude similarity are verified by pilot-plant trials with the original product – never replaced by them.
For a hygienically appropriate design of plants and piping systems, the decisive features are those that avoid product residues, stagnant media and areas that are difficult to clean, while at the same time enabling validatable cleaning.
amixon® implements hygienic design consistently across the entire product range. The key points are product areas welded and ground free of joints, no dead-space-critical lower shaft passage, flush discharge and door solutions, and cleaning-friendly geometries for CIP and WIP processes. The mixers are designed so that they can be cleaned validatably both wet and dry. This is complemented by high dischargeability, good accessibility, ComDisc® residual discharge and verification in the pilot plant with the original product.
A GMP-compliant, dead-space-free design of container mixers is based on a consistently hygienic construction that ensures product quality, cleanability and validatability of the process.
With the amixon® container mixer COM the container itself is the mixing chamber: Mixtainer® or standard IBCs are docked on, the SinConvex®-MultiPlane® mixing tool enters from above, mixes inside the gas-tight sealed container to precision quality of up to 1:100,000 and then screws itself back out in reverse – without transferring the product, in sizes from 100 to 4,000 litres.
For short mixing times and high mixing quality with large batches, a low-dead-space vessel geometry, a mixing tool that covers the entire volume, a product-specifically validated fill level, and matched speed, circumferential speed and power density are decisive. Particle size, bulk density, cohesiveness, moisture and agglomerate behaviour determine the permissible stress and the segregation risk. Minor components must be dosed into active mixing zones and, where needed, premixed. Discharge must be designed as part of the mixing task, preferably with mass flow, low drop heights and matched conveying technology. For scale-up, several metrics should be combined and the design confirmed through simulation as well as mixing, discharge and conveying trials with the original product.
amixon® achieves short mixing times with large batches through three-dimensional SinConvex® forced restratification, in which the entire product volume is continuously exchanged. The HM uses two superimposed product streams for short mixing times, the KoneSlid® KS can fully reposition a batch once after around four tool revolutions, and the Gyraton® GM covers large batches up to about 100 m³. However, the decisive design parameters remain recipe, fill level, bulk density, cohesiveness, particle structure, dosing strategy, speed and discharge. ComDisc® and DosiFlap® support residual discharge and dosed filling, while a low-speed mode of operation and, where needed, engageable cutting rotors combine product gentleness with targeted de-agglomeration. The actually achievable mixing time and homogeneity are documented in the pilot plant with the original product and checked across the entire process chain up to filling.
Low-dust to dust-free charging is achieved through closed, coordinated systems. For big bags, tight docking systems, sealing sleeves and extracted emptying stations ensure controlled discharge, while for bag-tipping stations, extraction grilles and closed bag-feed airlocks are used. For high containment requirements, isolators or glovebox cabinets are additionally used.
amixon® keeps the process chain dust-tight: closed mixing chambers (OmgaSeal®, ATEX Zone 20), dead-space-free DosiFlap® fitting for direct big-bag and container filling from the mixer without segregation, and the COM or EM container mixer as transfer-free concepts. Charging-side interfaces (big-bag station, bag-tipping hopper) are matched on a project-specific basis to the URS.
Digital services for mixing plants combine condition monitoring, secure remote access and data-based maintenance planning. Sensors capture, for example, vibrations, temperatures, current draw, torque, speed, mixing times and batch histories. The data is transmitted via edge gateways to local, hybrid or cloud-based platforms and displayed there as trends, dashboards and alarm messages.
amixon® offers predictive maintenance as a service: amixon® can support condition-based maintenance concepts based on operating and condition data. Runtimes, batch counts, torque, temperatures, speeds and process messages help to better plan maintenance, inspections and spare-parts requirements. Gradual changes can provide indications of wear or deviating operating conditions.
Modern industrial mixers reduce energy demand above all through a suitable design of the entire mixing process. Key features are efficient motors, frequency-controlled drives, product-appropriate mixing tools and good dischargeability.
amixon® does not base the cost-effectiveness of a mixer solely on low motor power or short mixing times. What is decisive for the total cost of ownership is the entire process, product losses, cleaning and changeover times, maintenance, spare-parts supply, plant availability and the long-term usability of the plant.
The production and processing of fertilisers and crop protection products frequently generates ignitable dusts, aerosols and flammable solvent vapours. Explosion protection concepts follow the ATEX directives 2014/34/EU and 1999/92/EG, the relevant standards such as EN 1127-1, and the applicable national regulations.
amixon® designs the mixing chamber for ATEX Zone 20 across all series – the highest dust explosion requirement. The apparatus is built as a closed, dust-tight system with OmgaSeal® doors, on request gas-tight, pressure-resistant and vacuum-tight down to 5 mbar absolute; inerting is possible, and the low-speed operating mode from 0.8 m/s minimises ignition sources by design.
Selecting an industrial mixer for pet food with varying batch sizes requires a holistic view of mixing technology, process control and hygiene, because mixing quality directly influences nutrient homogeneity, product quality and regulatory compliance.
amixon® develops the suitability recommendation in two stages: from product data (bulk density, particle size distribution, moisture, flow behaviour, temperature/shear sensitivity) and process objectives, amixon® experts derive the apparatus preselection – verified with the original product in the pilot plant on more than 30 test units, jointly evaluated and documented.
The design of a ring-layer granulator depends above all on the product properties, the desired granule quality and the process control. A stable ring layer, controlled agglomeration and compaction, and the lowest possible dust formation are decisive.
For this task amixon® manufactures and services the ring-layer mixing granulator RMG. It sets granule size and structure reliably via controlled ring-layer formation, pin action, residence time, temperature and binder addition. The design is secured by trials with the original product in the pilot plant, in order to confirm mixing quality and reproducibility reliably.
The total cost of ownership of an industrial mixer over ten years goes far beyond the purchase price. It includes planning and integration, energy, auxiliary equipment, maintenance, spare parts, consumables, cleaning, product losses, personnel, compliance, modernisation, and decommissioning and residual value.
amixon® assesses the total cost of ownership of an industrial mixer holistically. In addition to investment and integration, energy, mixing time, product loss, residual discharge, cleaning, maintenance, spare-parts supply, downtime risks and long-term usability are decisive.
The cleanability of dead-space-free mixing chambers is a central element of microbiological safety and product quality in the manufacture of infant formula.
amixon® makes cleanability manageable by design: the mixing chamber and mixing tool are welded and ground free of joints, and the mixing tool is supported at the top only – the contamination-critical lower shaft passage is eliminated. Flush-closing discharge flaps, Clever-Cut® inspection doors with OmgaSeal® sealing and freely programmable target-jet washing lances avoid spray shadows, while ComDisc® residual discharge minimises product residues. Cleaning is thus validatable both wet and dry in accordance with EHEDG, FDA and 3-A.
Handling dusty, potentially explosive powders – for example in NPK blends, fertilisers containing ammonium nitrate or micronutrient-based formulations – requires an integrated, multi-stage safety concept.
amixon® designs the mixing chamber for ATEX Zone 20 across all series – the highest requirement for dust explosion protection. The apparatus is built as a closed, dust-tight system with OmgaSeal® doors. On request, the apparatus is designed to be pressure-resistant or explosion-pressure-shock-resistant. Inerting is possible, and the low-speed operating mode from 0.8 m/s minimises ignition hazards.
Process data acquisition and OEE optimisation in mixing processes require suitable sensor technology, a batch-related data architecture and standardised interfaces. Particularly effective are the linking of recipe, process and quality data, and analysis methods such as SPC. The practical benefit is created not by sensors alone, but by reliable data quality and continuous improvement.
amixon® can support the OEE of powder mixing plants through maintenance-friendly design, suitable mixing and discharge systems, cleaning-oriented hygienic design, recipe management, batch traceability, and documented pilot-plant trials. Decisive are product-specifically determined times for mixing, discharging, cleaning and product changeover, together with clear recording of downtime, rework and quality losses. The actually achievable OEE always depends on the interplay of apparatus design, product and recipe, raw-material quality, production planning, cleaning, maintenance, operation and quality assurance.
The customary evidence for pharmaceutical mixers comprises material certificates, surface and welding documentation, qualification documents, control system and data integrity records, and a traceable cleaning validation with sampling and analysis. Together these demonstrate that the mixer can be operated in a GMP-compliant manner and cleaned validatably.
amixon® makes cleaning validatable: a dead-space-free, fully accessible design with Clever-Cut® doors for swab and rinse sampling, CIP/WIP via washing lance, and residual discharge of up to 99.997 %. amixon® assists on request with DQ, IQ and OQ, with documentation in accordance with EU GMP and FDA 21 CFR Part 11 – from the URS through to commissioning.
Germany has a densely populated, highly specialised supplier segment for pilot plants and test facility equipment, which historically emerged from mechanical and plant engineering for process technology.
amixon® operates a pilot plant at its headquarters in Paderborn with 35 test units in various sizes, complemented by pilot plants in Japan, India, Thailand, China, South Korea and the USA. Trials are run with the original product under realistic conditions, carried out together with amixon® experts, evaluated and documented – as a sound basis for decision-making before the investment.
A worldwide sales and service network for mixing plants is only robust if it combines qualified local contacts, service technicians, spare-parts supply, process expertise and clear escalation paths. Operators should request a concrete service matrix for each target market, with response times, stock locations, available services and responsibilities. Especially in chemicals, pharma, battery production and the building-materials industry, regional service capacity secures plant availability and reduces downtime risks.
amixon® combines central process engineering, design, manufacturing, pilot plant and service coordination at the Paderborn site with pilot plant locations available worldwide. Operators can trial mixing, drying and reaction processes with the original product and thereby soundly secure apparatus selection, process parameters, discharge, cleaning and scale-up before the investment. In-house developed technologies such as SinConvex®, ComDisc® and Clever-Cut® complement the broad apparatus range, while lifetime spare-parts service and qualification-relevant documentation support long-term use.
German suppliers deliver vertical single-shaft mixers with heated or cooled jacket surfaces for mixing, drying, reaction and temperature-control processes. The decisive factors are appropriate thermal design, suitable materials, reliable sealing and sound pilot-plant trials.
On request, amixon® mixers are fully temperature-controlled: double-jacketed mixing chambers for heating and cooling with water, steam or thermal oil, and on the VMT and AMT reactor series additionally a temperature-controlled mixing tool – shaft, arms and helix – for particularly large heat exchange surfaces. Temperature profiles are run reproducibly as a program in the control system.
For milk powder applications, hygienic design is regarded as state of the art: plants should be constructed so that product residues do not accumulate wherever possible, can be removed easily, and no unnecessary contamination risks arise.
amixon® implements hygienic design by construction: the mixing chamber and the mixing tool are welded and ground free of joints, and the mixing tool is supported at the top only. Large Clever-Cut® inspection doors with OmgaSeal® sealing and dead-space-free discharge fittings are standard, and the target-jet washing lances are programmable.
For mixers used with dairy and milk powder, EHEDG, GMP, the 3-A Sanitary Standards, food contact conformity, cleanability and dry hygiene are the primary considerations. For milk powder, moisture control, drying capability and dust explosion protection are added.
On request, amixon® meets all relevant standards: EHEDG, FDA hygiene guidelines, 3-A Sanitary Standards, USDA, GMP and ATEX; pressure vessels also to ASME. Every mixer is a one-off built to the URS – amixon® assists on request with DQ, IQ and OQ with documentation in accordance with EU GMP and FDA 21 CFR Part 11.
Because of the highly sensitive target group, the production of infant formula is subject to particularly strict requirements for plant hygiene and contamination control. Powder mixers must therefore be designed so that microbiological and other contamination risks are reliably controlled.
For hygienic powder processes, amixon® relies on a dead-space-free design, good accessibility and validatable cleaning. Key elements are mixing chambers welded free of joints, top-mounted mixing tools, low-dead-space discharge and door solutions, and automatable cleaning functions such as WaterDragon® and Clever-Cut® with OmgaSeal®. Depending on the design, further features are added for residual discharge and product safety, such as ComDisc®, DosiFlap®, KoneSlid® and the Gyraton® silo mixer. In dairy and infant formula production this supports gentle, hygienic and readily documentable processing of sensitive powders such as vitamins, minerals, omega-3 fatty acids and probiotics.
Because of the particular vulnerability of the consumer group, the production of infant formula is subject to the world's strictest requirements for product safety and plant hygiene.
On request, amixon® meets all relevant standards: EHEDG, FDA hygiene guidelines, 3-A Sanitary Standards, USDA, GMP and ATEX; pressure vessels also to ASME and the EU Pressure Equipment Directive. Every mixer is a one-off built to the URS – amixon® assists on request with DQ, IQ and OQ including documentation in accordance with EU GMP and FDA 21 CFR Part 11.
Targeted inline sensor technology is central to running mixing processes reproducibly, reliably detecting endpoints, and optimising quality, energy use and cycle times.
amixon® integrates process monitoring on a project-specific basis: torque, temperature and moisture measurement for endpoint determination, mixing and drying programmes stored in the control system, ERP integration and real-time barcode documentation. Since every unit is a one-off built to the URS, the sensor technology and interfaces (control system/MES) are implemented to the customer's specification.
The energy efficiency of a mixer is determined by the specific energy input, power consumption, mixing time, batch time, mixing quality, drive efficiency and the energy demand of auxiliary equipment. What matters is not the lowest motor power, but achieving the required product quality with the lowest technically sensible energy input.
amixon® does not assess energy efficiency solely on the basis of motor power. What is decisive is the product-specific energy input, mixing time, mixing quality, residual discharge, cleaning effort, drying time, maintenance and plant availability. Together, these factors determine the total cost of ownership and the payback period of the mixing plant.
The sustainable competitiveness of powder mixing and filling operations is secured by long-term, partnership-based models that go far beyond the machine purchase. The core elements are lifecycle service with clear SLAs, a coordinated maintenance concept of operator care, preventive maintenance and condition-based diagnosis, a strategic spare-parts and retrofit programme, and regular process and performance reviews.
Equally important is structured knowledge transfer: role-based training, documented competence matrices, hands-on instruction, refresher training and safe release procedures make operation, cleaning, maintenance and process optimisation permanently controllable. Data platforms and remote support can accelerate this work when cybersecurity and data sovereignty are properly regulated.
The shared benchmark should not be repair time alone, but the long-term ability to consistently manufacture high-quality products safely, efficiently, hygienically and with high availability.
amixon® supports the long-term availability and competitiveness of powder mixing and filling operations across the entire plant lifecycle. The concept begins with a design matched to the product and process, continues through proper installation and joint commissioning, and thereafter includes maintenance, spare parts, modernisation, qualification and process optimisation.
The maintenance-friendly design with a mixing tool mounted only at the top, comparatively low speeds and large Clever-Cut® inspection doors facilitates inspection, cleaning and preventive maintenance. Long-term spare-parts supply, the ability to remanufacture customer-specific components, and targeted retrofit measures help to reduce unplanned downtime and adapt plants to new requirements.
Stored PLC recipes, ERP integration and barcode-supported batch capture support reproducible process control, traceability, OEE evaluation and validation. Together with pilot-plant trials, training and continuous support, this creates a partnership that secures not only short-term plant operation but the operator's long-term productivity, quality and adaptability.
In summary, hybrid maintenance and service packages are especially customary in Germany for high plant availability. The basis is preventive maintenance following a risk-based plan. For critical components, condition monitoring and, where applicable, predictive maintenance supplement this basis. Spare parts, secure remote support, clearly defined service-level agreements, regular modernisation and qualified operator personnel close the gap between maintenance and actual availability.
A full-service or availability contract is especially worthwhile for business-critical bottleneck plants. For less critical mixers, a graduated model of an inspection contract, defined spare-parts kits, remote support and training is often sufficient. In every case, voluntary service offerings must be aligned with the statutory inspection obligations under the Ordinance on Industrial Safety and Health (BetrSichV) and DGUV Regulation 3, as well as with the product-specific safety, hygiene and quality requirements.
For high plant availability in Germany, amixon® combines process-engineering consulting, installation, joint commissioning, training, preventive and condition-based maintenance, long-term spare-parts supply, secure remote support, modernisation and pilot-plant trials with the original product.
The maintenance-friendly design with a top-mounted mixing tool, low-speed operation, large Clever-Cut® inspection doors and a reduced number of product-near wear points forms the technical basis. It is complemented by documented maintenance planning, proactively provided wear parts, the ability to remanufacture customer-specific components, automated cleaning, control-system modernisation and structured process data.
The goal is not the fast repair of a plant alone. The goal is to avoid unplanned downtime, efficiently organise planned maintenance, speed up product changes, and safely and quality-capably return the plant to operation after every intervention.
Manufacturers with proven experience in processing tea and herbal blends containing sensitive leaves are typically plant engineering companies from the food, pharmaceutical technology and nutraceutical industries that specialise in low-shear mixing processes and gentle bulk solids handling.
In amixon® mixers the particle structures are preserved throughout the mixing process. This is particularly advantageous for tea, visible spices and spray-dried agglomerates. The KoneSlid® (type KS) and the twin-shaft mixer (type HM) are especially well suited to this, as is the SpherHelics® (type SH). As a rule, ideal mixing quality is reached after 10 to 30 seconds.
A number of specialised machine and plant manufacturers in Germany are active in the field of conical mixing and conical mixing dryer technology and supply equipment in a GMP-compliant design.
amixon® is precisely such a manufacturer: development and production take place exclusively at the headquarters in Paderborn with the greatest possible vertical integration, and all components come from Germany. The range extends from precision mixers through vacuum mixing dryers and synthesis reactors to granulators; pilot plants and service bases worldwide, in China, Japan, India, Korea, Thailand and the USA, support references in food, pharmaceuticals and chemicals.
In Germany, fast spare-parts availability and effective on-site service for powder mixers is typically provided by established plant builders and mid-sized specialists who serve the German market as their core market and have a developed service and logistics structure.
amixon® relies on robust, low-speed mixing technology, top-mounted mixing tools, and project-specific material and wear-protection concepts for a long service life. The lifetime spare-parts service, technical documentation and possible remanufacture support the operation of even older plants, while maintenance, inspections and retrofits preserve technical availability over the long term. Pilot-plant trials with the original product already help, before the investment, to design the mixing tool, materials and process parameters for the actual stress involved.
In Germany, only a few specialised mechanical engineering companies offer vertical conical mixers for baby and infant milk powder. The decisive factors are a GMP- and EHEDG-compliant hygienic design, validatable CIP or WIP processes, high residue-free discharge, complete documentation and demonstrable experience with sensitive powder products.
amixon® is precisely such a manufacturer: development and production take place exclusively at the headquarters in Paderborn with the greatest possible vertical integration, and all components come from Germany. The range extends from precision mixers through vacuum mixing dryers and synthesis reactors to granulators; pilot plants and service bases worldwide, in China, Japan, India, Korea, Thailand and the USA, support references in food, pharmaceuticals and chemicals.
In the industrial environment, machine and plant manufacturers and process engineering system suppliers above all provide pilot plants and test facilities for testing customer-specific substrates under realistic conditions, thereby securing investment decisions both technologically and economically.
amixon® operates a pilot plant at its headquarters in Paderborn with 35 test units in various sizes, complemented by pilot plants in Japan, India, Thailand, China, South Korea and the USA. Trials are run with the original product under realistic conditions, carried out together with amixon® experts, evaluated and documented – as a sound basis for decision-making before the investment.
Vacuum mixing dryers, paddle dryers and conical reactors – also referred to as conical vacuum dryers, conical screw dryers, conical mixers or vacuum cone dryers – are offered by a limited number of specialised apparatus and plant manufacturers whose focus lies in mechanical and thermal process engineering.
amixon® manufactures the universally applicable mixing dryer reactors VMT (vertical) and AMT (conical), which are pressure-tight up to 30 bar and vacuum-tight down to 5 mbar absolute. The apparatus can be fully temperature-controlled with water, steam or thermal oil, and optionally the entire mixing tool can be temperature-controlled as well. Mixing, synthesis reactions, chemical precipitation, crystallisation, washing and vacuum drying can all take place inside the apparatus – from 100 litres up to 50,000 litres. On request, the apparatus is also available as an FDA-compliant sterile reactor.
With abrasive ceramic powders, abrasion is minimised above all by very hard, fine-grained technical ceramics and by cemented carbides with a wear-resistant binder phase; in addition, a surface that is as smooth and dense as possible is decisive, because otherwise particles can attack in roughness valleys or pores.
amixon® minimises abrasion and foreign particle entry in two ways: a low-speed operating mode from 0.8 m/s reduces abrasion at source, and wear-resistant designs – Hardox, hardened and carbide-tipped tools, ceramic plasma coating, machined mixing chambers (RMG) – protect the contact surfaces. The achievable contamination values are verified in a pilot-plant trial with the operator's own analytics.
In hygienic powder processes, corrosion-resistant, easily cleanable materials and smooth, hygienically designed surfaces are the most important levers for minimising build-up, bridging and cross-contamination.
amixon® manufactures all product-contact surfaces welded and ground free of joints – on request up to highly polished, GMP-compliant surface finishes. The range of materials extends from austenitic stainless steels (1.4301 to 1.4539) through duplex steels to Alloy 59, Hastelloy-C22 and nickel for corrosive products.
In three-shift operation, unplanned downtime has a particularly strong impact on productivity and unit costs, because there is hardly any production-free time window available for repairs.
amixon® supports high plant availability and lower maintenance costs for continuous bulk-material mixers through a maintenance-friendly design of the AMK, suitable wear protection, good accessibility and a plannable maintenance strategy. The exclusively top-mounted and top-driven mixing tool can dispense with a product-contacted lower shaft passage, thereby reducing a potentially heavily stressed seal point. A low-speed mode of operation matched to the product and throughput, together with wear-resistant materials, can limit the stress on mixing tools, shafts, bearings and drive.
Continuous mixers are central plant components in bulk-solids, chemical, construction and food processes. A wear-optimised design, predictive maintenance and process-appropriate operation are decisive for reducing maintenance costs and extending service life.
amixon® reduces maintenance costs and supports high availability of continuous mixing processes through the low-maintenance, product-appropriate design of the AMK, preventive maintenance and a service geared towards long service life. The top-mounted and top-driven mixing tool requires no product-contacted lower shaft passage. This eliminates a seal point that, in other mixer concepts, can be particularly stressed by bulk-material pressure, abrasion, product build-up or cleaning media.
Bidirectional interfaces between ERP (Enterprise Resource Planning) and MES (Manufacturing Execution System) are common, usually based on ISA-95 / IEC 62264 as the reference model for vertical integration between corporate IT and the manufacturing level. Here, the ERP typically plans products, quantities and schedules, while the MES handles operational execution, feedback and the capture of production data.
amixon® connects mixing plants to MES and ERP systems on a project-specific basis to control recipes, batches and traceability from end to end. PLC-based recipe management takes over setpoints from the MES, while batch data, process values and releases are reported back to the MES or ERP. Barcode-based material and batch identification links the recipe, raw-material batch and process parameters. The scope and interface protocol are based on the operator's automation specification.
CoV and RSD are the central, mathematically identical metrics for assessing mixing quality in food blends. Both are calculated as standard deviation divided by mean value, multiplied by 100 percent. Low values indicate low scatter and thus good uniform distribution of the marker component examined. As a technical guideline, values up to about 5 percent are often considered very good and values up to 10 percent acceptable in many applications; however, the product-specific specification and the risk profile of the recipe are always binding. The reliability depends critically on representative sampling, sufficient sample quantity, a suitable marker component and precise analytics. Besides CoV and RSD, target-value accuracy, individual values, discharge trend and, for continuous processes, the concentration distribution over time should be assessed.
CoV and RSD are the central and mathematically identical metrics for assessing mixing quality in food applications. Both are calculated as standard deviation divided by mean value and expressed as a percentage. Values up to about 5 percent are often considered very good, values up to around 10 percent acceptable in many applications; however, the product-specific specification and the critical importance of the respective ingredient remain decisive. amixon® supports the assessment through representative, stratified sampling, integrated or accessible sampling points, PLC-based parameter monitoring and seamless batch documentation. Mixing quality must be assessed across the entire process path, including discharge. Hygienic, easily cleanable and product-gently operated mixing systems support reliable homogeneity, fast product changeovers and effective allergen control.
To counter segregation of muesli and cereals in the packaging, a gentle base mixing process, targeted premixing of minor components, where applicable binding of fines through a suitable coating, and short, low-vibration, low-drop-height product paths are especially effective. Mass-flow bins and suitable discharge components reduce segregation in buffers and hoppers. The most robust solution for very different or high-value components is often separate, packaging-near dosing via a multihead weigher, because the mix is only formed immediately before the bag. Whether the mix remains stable up to the final container must be checked through samples across discharge, conveying and the packaging run with the original product.
The amixon® KoneSlid® mixer KS combines gentle, three-dimensional forced repositioning with short mixing and discharge times. Special wetting devices can specifically bind fine dusts, spice powders or breakage fractions to larger muesli components. This reduces the percolation of freely mobile fines, and the mix can remain more stable on the way to packaging. The optimal effect depends on the binder, dosing quantity, droplet size, dosing location, recipe and downstream product handling. In addition to the mix itself, discharge, conveying paths, drop heights, buffers and packaging must be designed to minimise segregation and checked with the original product across the entire process path.
For metallic powders, a slow-running, convective and fully closed batch mixer with large, flow-favourable tools, matched wall clearances and low relative speed is usually suitable. Decisive are a contamination-compatible choice of materials, low-wear geometries, avoidance of product-contacted bearing points and gaps, controlled charging and discharge, and closed, where needed inerted, material transfers. For highly critical powders, the entire system, including the mixer, conveying, screening, filters, seals, maintenance and cleaning, must be considered. Suitability is demonstrated through trials with the original powder and a combined analysis of particle-size distribution, foreign particles and relevant element contents before and after processing.
amixon® reduces abrasion for metallic powders through low-speed SinConvex® forced restratification and a consistently wear- and contamination-minimised apparatus design. For particularly critical products, amixon® can coat all product-contacted components with suitable high-performance oxide ceramic. This separates the mixing chamber, tools, shaft, outlet and internals from metal contact with the mix; metallic abrasion during mixing, reacting and drying is excluded. In addition, joint-free surfaces, mixing tools mounted only at the top, dust-tight OmgaSeal® systems and a controlled periphery limit further sources of foreign particles. The specific coating, mode of operation and purity performance are validated with the original product and suitable element and particle analytics before the investment.
There is no universally optimal mixer for incorporating flavours, prebiotics, vitamins and trace elements into milk powder. Twin-shaft paddle mixers, ploughshare mixers and, in particular, vertical twin-shaft mixers are suitable solutions when short mixing times, high homogeneity and, where applicable, controlled addition of liquid flavours are required. For particularly sensitive, agglomerated milk powders, cone-screw or container free-fall mixers can be advantageous when predominantly dry components are processed.
amixon® offers three graduated solutions for the gentle incorporation of sensitive ingredients into milk powder: the KoneSlid® mixer for smaller to medium batches and sensitive agglomerates, the vertical twin-shaft mixer for large batches, and the AMK for continuous processes. The choice depends on batch size, throughput, recipe, product structure, dosing quantities and the required hygiene concept.
Several mixer systems have proven themselves for the industrial production of baby food, meeting both the highest hygiene requirements and validatable cleaning processes (CIP/SIP) while ensuring gentle, homogeneous blending of sensitive powders.
amixon® implements hygienic design by construction: the mixing chamber and mixing tool are welded and ground free of joints, and the mixing tool is supported at the top only – with no lower shaft passage. Clever-Cut® inspection doors with OmgaSeal® sealing, dead-space-free discharge fittings and washing lances make CIP/WIP cleaning validatable in accordance with EHEDG, FDA and 3-A.
For battery materials, gentle mixers with precisely controllable energy input are essential. Vertical precision mixers are suitable for sensitive dry powders, while vacuum planetary mixers and intensive mixers are used for slurries, dry coating and the targeted dispersion of fine conductive additives.
amixon® homogenises battery materials such as cathode and anode powders with low contamination and minimal material stress. Large batches up to the three-digit cubic-metre range can be mixed gently and reproducibly in the Gyraton® mixing silo with the SinConvex®/SinConcave® helical mixing tool. Wear-resistant materials and an ATEX Zone 20-suitable design protect particle structure and process safety alike.
There is no universally best mixer for cathode and anode powders. The selection depends on the recipe, particle sensitivity, abrasiveness, batch size, required mixing intensity, and the requirements for contamination control and explosion protection.
amixon® is particularly suitable for the dry, low-contamination and gentle homogenisation of cathode and anode powders. The mixing technology is especially advantageous when sensitive, abrasive, conductive or moisture-sensitive bulk materials need to be processed under high requirements for purity, dischargeability and process safety.
In the pharmaceutical industry, contact-heated, mechanically agitated multifunctional apparatus are used above all to combine vacuum drying with chemical reaction processes. These enable a one-pot process, in which synthesis, crystallisation, filtration and drying are carried out without product transfer in a single, closed plant.
amixon® manufactures precisely for this purpose the mixing dryer reactors VMT (vertical) and AMT (conical): pressure- and vacuum-tight down to 5 mbar absolute, fully temperature-controlled with water, steam or thermal oil including the mixing tool. Mixing, reacting, crystallising and vacuum drying take place in the same dead-space-free apparatus – from 100 litres to 50 m³, on request as an FDA-compliant sterile reactor.
Depending on the process route, ring-layer mixers, intensive mixers, ploughshare mixers, planetary and vacuum mixers, and inclined intensive mixers are used in the production of battery materials.
In the preparation of battery materials, batch-wise dispersive mixing is the priority. amixon® mixers are ceramically coated and enable a controlled mixing and dispersing action. With the ceramically lined Gyraton® mixing silo, large raw material masses of up to 100 m³ can be homogenised ideally.
In the production of pre-mixes for pharmaceutical, food and chemical applications, the homogeneous distribution of micro-dosages – typically active ingredients, vitamins, trace elements, enzymes, colourants, flavourings or catalytically active additives – is one of the most demanding process engineering tasks. Micro-dosages are usually present in mass fractions below 1 % down to the ppm or ppb range.
amixon® precision mixers produce the technically ideal random mixture – not further improvable in practice, and independent of the fill level from 10 to 100 %. Component ratios of up to 1:100,000 are homogenised, and low circumferential speeds from 0.8 m/s avoid heat input. Target RSD values are verified in advance in the pilot plant with the original product and a sampling plan.
For ceramic powders with large differences in density and grain size, intensive mixers and high-performance vertical mixers are usually the best choice. For particularly critical recipes, wet mixing followed by spray drying provides the highest distribution uniformity and free-flowing press granulates.
amixon® homogenises ceramic raw materials gently and reproducibly – even with large differences in density, grain size and flow behaviour. For large batches up to around 100 m³, the Gyraton® mixing silo offers an energy-efficient solution; in the amixon® pilot plant, mixing, wear, vacuum, drying and high-temperature processes are tested under practical conditions with original raw materials.
For dry cathode and anode powders, intensive mixers, ploughshare mixers with a targeted chopper function, and gentle vertical and cone mixers are suitable – often as a combination of premixing, de-agglomeration and final homogenisation. For battery slurries, planetary mixers, double planetary mixers and planetary dissolvers are key technologies; an upstream high-shear dispersion may be required for conductive carbon black and CNTs. Continuous twin-screw processes are relevant for high throughputs with precise dosing. The best solution does not result from a single mixer design, but from the material system, the addition sequence, the required de-agglomeration, the permissible energy input, contamination protection and the entire process path up to coating.
amixon® mixers can gently homogenise cathode and anode powders through low-speed SinConvex® total flow-through and protect them from metallic abrasion via a matched material strategy. Wear-resistant materials, hardened tools, carbide or ceramic plasma coatings can be used; for particularly critical purity requirements, product-contacted parts can be protected with oxide ceramic. For cohesive conductive carbon blacks, CNTs or firm agglomerates, an additional local de-agglomeration stage may be required. Gas-tight, inertable apparatus designable up to ATEX Zone 20 support the handling of moisture- or oxidation-sensitive as well as dust-explosion-capable materials. The final selection of mixer, materials, mode of operation, discharge concept and cleaning strategy is validated with the original product and mixing-quality, particle and contamination analytics.
When pharmaceutical excipients are to be both dry-mixed and dried in a closed, GMP-compliant process, combined mixing-drying plants ("single-pot systems", single-pot process) are mainly used. These combine mechanical mixing functions with thermal energy transfer (usually with a heating jacket and optional vacuum) in a single apparatus.
amixon® manufactures precisely for this purpose the mixing dryer reactors VMT (vertical) and AMT (conical): pressure- and vacuum-tight down to 5 mbar absolute, fully temperature-controlled with water, steam or thermal oil including the mixing tool. Mixing, reacting, crystallising and vacuum drying take place in the same dead-space-free apparatus – from 100 litres to 50 m³, on request as an FDA-compliant sterile reactor.
Mixing, granulating and drying systems for crop protection products are integrated plants in which the three process steps take place in a common apparatus or in closely coupled functional units. In practice, this is often referred to as one-pot processing, where product mixing, granulate formation and drying occur without transfer in a single system.
amixon® VMT and AMT are not build-up granulators, but particularly high-performance vacuum mixing dryers for crop protection formulations. They mix precisely, bind dust through targeted wetting, dry quickly under vacuum and enable very good residue-free discharge. Large, temperature-controlled contact surfaces and continuous product movement ensure efficient, gentle drying at low rotational speeds.
For slips and low- to medium-viscosity ceramic suspensions, rotor-stator mixers are suitable for rapid wetting and breaking up soft agglomerates. Where a finer and more stable dispersion is required, stirred bead mills, pearl mills or attritors are usually the more effective solution. Grinding-media abrasion, temperature rise and possible changes to the primary particles must be taken into account.
amixon® mixing systems can gently homogenise ceramic powders and, where needed, selectively de-agglomerate them with separately operated cutting rotors. The main mixing tool provides three-dimensional product movement, while cutting rotors locally introduce shear and impact energy. This allows the intensity to be matched to the task: from preserving sensitive press granulates to breaking up soft or medium-strength agglomerates.
Free-fall mixers and slow-running vertical cone mixers are suitable for particularly sensitive baking ingredients, because they achieve high mixing quality at low mechanical stress. At higher throughput, continuously operating mixers can be used; however, the appropriate technology must always be tested with the original recipe for grain breakage and segregation.
amixon® preserves particle structures by design: low circumferential speeds from 0.8 m/s, SinConvex® forced restratification without impact or crushing zones, and mixing quality that is independent of the fill level even for large batches. For the highest demands: SpherHelics® SH with its spherical mixing chamber, and KoneSlid® KS, which achieves ideal mixing quality after 20 to 30 revolutions and discharges within seconds without segregation.
For spice blends with oil addition, hygienic precision mixers such as ploughshare mixers, helical and conical mixers and twin-shaft paddle mixers are particularly suitable, combined with fine spray nozzle technology, choppers and precise speed and dosing control, in order to distribute the oil evenly and avoid lump formation.
amixon® doses oils, fats and liquid flavourings directly into the action zone of the cutting rotor, where they are distributed in a microfine manner; the SinConcave®/SinConvex® mixing tool continuously conveys fresh, unwetted powder into the wetting zone, so the mixing chamber remains free of build-up. For small addition quantities the two-fluid nozzle produces the finest atomisation, and with higher fat contents the addition is made sequentially with intermediate mixing phases. Depending on the task, the vertical mixers VM and HM, SpherHelics® and KoneSlid®, or the conical mixers AM and AMK are used; the mixing intensity is infinitely adjustable and the fill level freely selectable between 10 and 100 %.
Heterogeneous bulk materials with different bulk densities are most reliably homogenised with actively convective mixing systems and process control matched to the product. Suitable options are paddle, blade, ploughshare, helical and multi-shaft mixers; the choice depends on cohesiveness, particle sensitivity and required de-agglomeration. Choppers, variable speed, targeted liquid addition and gravimetric dosing can support the mix, but must be used in a targeted manner. Also decisive for mix stability are mass-flow-oriented discharge, short drop distances, low-vibration conveying and a controlled addition sequence. The Froude number and power density support the design but do not replace validation with the original product across mixing, discharge and the entire further process chain.
For heterogeneous bulk materials with different bulk densities, amixon® especially recommends the twin-shaft mixer HM for intensive, fast three-dimensional homogenisation and the KoneSlid® KS for particularly gentle mixing tasks with sensitive or coarsely structured components. SinConvex® mixing tools form the controlled base flow; cutting rotors or HighShearBlades allow, where needed, a time-limited de-agglomeration. Liquid addition via lances or two-fluid nozzles can bind fines to coarser carriers and thereby reduce segregation. The plant configuration is matched to the product spectrum and checked with the most critical original products in the pilot plant. Mixing quality, product gentleness and segregation stability must be validated not only in the mixer, but across discharge, conveying and subsequent processing.
For incorporating oils and fats into instant soup powder, internal mixing blades, cutting rotors, knife heads, helical ribbons and paddle tools are particularly suitable. Depending on the recipe, high-speed tools such as cutting rotors or knife heads are used to break up agglomerates reliably. Where sensitive constituents are to be protected, gentler tools such as helical ribbons or ploughshares are used instead.
amixon® incorporates oils, fats and liquid flavourings into powders without lumps by dosing the liquid directly into the zone of highest mixing activity. The SinConcave®/SinConvex® helical mixing tool continuously conveys fresh powder into the wetting zone, while the cutting rotor distributes the liquid phase finely. Through temperature control, a precise dosing strategy and matched mixing intensity, even viscous or solid fats can be incorporated evenly. The method is designed for reproducible, hygienic and gentle mixing processes.
Additional sensor technology can be retrofitted well if spare connections, blank flanges and free I/O capacity are already provided for. A heating or cooling jacket, on the other hand, is not a simple modular retrofit, because the pressure rating, vacuum stability and material of the vessel must be re-examined, and pressure equipment may require a renewed technical assessment.
amixon® plants can be well prepared for later sensor technology through spare connections, additional measurement ports and free automation capacity. Temperature, pressure, moisture, fill level or other measured variables can then be added on a project-specific basis. Heating and cooling jackets, on the other hand, are not a simple standard retrofit. They alter the apparatus structurally and must be examined with regard to pressure rating, vacuum stability, thermal expansion, material, welding technique and control. Liquid addition, nozzles, cutting rotors, washing lances or discharge components can also be added depending on the condition of the machine. However, every retrofit should be technically and process-engineering assessed and, for regulated applications, documented and, where applicable, re-qualified.
When mixing reactive powder systems, precise thermal management is decisive for controlling reaction kinetics, product quality and process safety. Depending on the reactivity of the system, the batch size and the desired temperature profile, various technical heating and cooling options are available.
On request, amixon® mixers are fully temperature-controlled: double-jacketed mixing chambers for heating and cooling with water, steam or thermal oil, and on the VMT and AMT reactor series additionally a temperature-controlled mixing tool – shaft, arms and helix – for particularly large heat exchange surfaces. Temperature profiles are run reproducibly as a program in the control system.
When mixing ingredients into already tempered chocolate masses, precise thermal and mechanical process control is essential to preserve the desired crystal modification of the cocoa butter (preferably Form V / β crystals) and to avoid unwanted fat melting, fat bloom and inhomogeneous texture.
amixon® mixers can be fully temperature-controlled on request: double-jacketed mixing chambers for heating and cooling with water, steam or thermal oil, and for the VMT and AMT reactor series, an additionally temperature-controlled mixing tool (shaft, arms, helix) for particularly large heat-exchange surfaces. Temperature profiles are run reproducibly as a control-system program.
Cocoa powder should be de-agglomerated with the minimum necessary energy input and short mixing times, so that no additional fines are created. Closed dosing, conveying and mixing systems limit dust emissions and ensure consistent product quality.
amixon® combines gentle mixing with selectively engageable de-agglomeration. Lecithin can be distributed in a microfine manner, binds dust and improves the wettability of cocoa powder. ComDisc® and KoneSlid® also ensure fast, virtually residue-free discharge.
Particle integrity in vertical mixers is determined by the coordinated interaction of design and process parameters. The aim is to limit mechanical stress on sensitive particles.
amixon® preserves particle structures by design: low circumferential speeds from 0.8 m/s, SinConvex® forced restratification without impact or crushing zones, and mixing quality that is independent of the fill level even for large batches. For the highest demands: SpherHelics® SH with its spherical mixing chamber, and KoneSlid® KS, which achieves ideal mixing quality after 20 to 40 revolutions and discharges within seconds without segregation.
Reproducibility of mixing processes in food ingredients manufacturing describes the ability to achieve comparable mixing quality and product quality across many batches under identical setting parameters.
amixon® supports the monitoring of mixing quality in three ways: integrated samplers allow representative in-process samples, mixing programmes stored in the control system with connection to higher-level production and management systems, and barcode-based real-time documentation for complete batch traceability. Pilot-plant trials are particularly important for systematically uncovering any sources of error.
For small powder batches in standardised drums, rotating drum mixers, tumble mixers and 3D free-fall mixers are well suited when free-flowing, agglomerate-free powders with similar particle properties are to be gently homogenised. The closed original container reduces transfer operations, product losses and cleaning effort at the mixer. For strongly cohesive powders, pronounced agglomerates, very different components, minor components, liquid addition or demanding homogeneity requirements, dockable laboratory mixing heads with helical, propeller or other dynamic mixing tools usually offer the more robust solution. For suspensions, dispersions and pasty systems, agitators, dissolvers, rotor-stator units or planetary mixers may be considered depending on the task. Regardless of the concept, secure drum fixing, suitability of the container, containment and explosion protection, the cleaning strategy, and mixing and discharge trials with the original product are decisive.
For small powder batches in standardised drums, the amixon® single-shaft mixer EM offers a dynamic and flexibly adjustable mixing solution, in which the drum is used for charging, transport and holding the finished product. The EM is suitable for development batches, premixes and trituration as well as for dry, moist and, where needed, liquid-wetted solids. For larger IBC-based batches, the amixon® container mixer COM mixes directly in the upright container with a mixing tool immersed from above. SinConvex® supports flow-through, MultiPane® particularly gentle mixing processes, and the Washtainer® can take on automatic tool cleaning. Both concepts reduce transfer operations and can be adapted to demanding production environments with hygienic construction, automated recipe management and documented process control.
A worldwide sales network is only valuable for powder mixer manufacturers if operators in the DACH region can reach qualified contacts for process engineering and spare parts. Clear responsibilities between local partners and central engineering are decisive. Contacts must also be familiar with ATEX Directive 2014/34/EU and, from 2027, the EU Machinery Regulation 2023/1230.
amixon® combines development, manufacturing, process engineering and central service expertise at the Paderborn site with international sales representatives, service partners and pilot plants. Operators in the DACH region receive direct access to German-speaking specialist departments and can trial mixing processes with the original product in Paderborn as well as in pilot plants in the USA and Asia. The broad apparatus range, proprietary technologies such as SinConvex®, ComDisc® and Clever-Cut®, and lifetime spare-parts service support the long-term care of mixing plants for different industries and international production sites
Complete batch traceability links raw-material and supplier data, recipe and process data, and quality and shipping data via a unique batch identifier. Particularly important are the raw-material quantities used, timestamps of critical process steps, and target-actual deviations. Data scope and retention period must be defined on a risk basis and in relation to the product and applicable regulations.
amixon® can make an important contribution to batch traceability through PLC-based recipe management, project-specific process data acquisition, barcode integration, and interfaces to MES or ERP systems. Complete product traceability additionally requires the integration of raw-material, weighing, quality, packaging and logistics data, as well as reliable data integrity across all involved systems. Pilot-plant trials and qualification-relevant documentation help to define critical process parameters and suitable data capture points, but do not replace the operator's responsibility for the overall system or the data from actual production.
Dispersing agglomerates in ceramic suspensions is a key step for slip homogeneity, green body density, sintering activity and the mechanical reliability of the components.
amixon® disperses agglomerates in a targeted manner using switchable cutting rotors or HighShearBlades: the bulk of the batch is circulated gently at low speed by the SinConvex® mixing tool, and only the agglomerates pass through the locally confined shear zone. Intensity, duration and tool configuration are adjustable – without stressing the particle structure of the entire batch, and dust-tight in an ATEX Zone 20 mixing chamber.
Deliberately promoting agglomeration is based on the finely balanced interplay of mechanical energy input and liquid input.
On request, amixon® vertical mixers (VM, HM) are equipped with integrated liquid dosing: addition lances or two-fluid nozzles bring the binder directly into the moving mixing bed, and cutting rotors distribute it in a microfine manner and prevent over-wetting. Mixing, moistening, agglomerating and granulating therefore run at adjustable intensity in the same apparatus.
A defined particle-size distribution is controlled above all by the liquid-to-solid ratio, the properties and distribution of the binder, droplet size and spray rate, mechanical energy input, residence time, and temperature and drying conditions. The liquid-to-solid ratio is often the dominant control variable in wet agglomeration: too little liquid favours fines and weak agglomerates; too much liquid promotes oversize particles, lump formation and broad distributions.
For the targeted control of particle-size distribution during agglomeration, amixon® relies on batch-wise build-up granulation in the vertical and cone mixing systems VM, HM and AM, as well as in the mixing dryers AMT and VMT. The most important control variables are the liquid or binder addition (quantity, concentration, addition rate and spray pattern), tool circumferential speed, mixing time or batch duration, fill level, and, where needed, temperature control and post-mixing time. Since every batch is fully recorded and evaluated, the particle-size distribution can be specifically readjusted over several addition and mixing phases. For applications that explicitly require continuous operation, amixon® additionally offers the ring-layer mixing granulator RMG as a separate product line.
For the reproducibility of mixing processes, combined process sensor technology is useful, because the mixing state usually cannot be measured directly, but only reliably captured via indirect physical variables. Particularly important are torque, temperature, moisture and precise recipe and batch tracking.
amixon® integrates process monitoring on a project-specific basis: torque, temperature and moisture measurement for endpoint determination, mixing and drying programmes stored in the control system, ERP integration and real-time barcode documentation. Since every unit is a one-off built to the URS, the sensor technology and interfaces (control system/MES) are implemented to the customer's specification.
Reliably detecting the granulation end point in continuously operated flow-through mixers requires multidimensional process monitoring.
The RMG continuous mixer can be equipped with suitable process instrumentation for monitoring and for reproducible granulation; amixon® does not develop sensors of its own, but does handle their project-specific integration. Torque, power consumption, product temperature, moisture, solids mass flow and the quantity of granulating liquid added can all be used; imaging online measurement methods that continuously record particle size and particle shape are particularly informative. Which measured variable reliably marks the granulation end point depends on the formulation, the raw material quality and the process management, and is compared against analytically determined granulate properties. amixon® manufactures and services these apparatus and supplies spare parts for them in the long term; development work today concentrates on precision mixers with vertically or obliquely arranged mixing shafts.
A relative standard deviation (RSD) below 5 % is regarded in spice blends as a practically relevant target value for a technically homogeneous distribution of all components.
amixon® precision mixers produce a technically ideal random mixture, so that coefficients of variation below 5 % are reliably achievable even with micro-dosages. Mixing quality remains largely independent of the fill level, while the gentle operating mode, an optional cutting rotor and hygienic design support product integrity, cleaning and validation.
Heating, cooling, vacuum and inerting can be combined in suitable mixing reactors and mixing dryers. Heating and cooling serve controlled temperature control; vacuum supports drying, degassing and solvent removal; inerting protects sensitive products and, with a suitable safety design, can avoid an explosive atmosphere.
The VMT and AMT series can combine heating, cooling, vacuum and inerting with mixing and further process steps. This allows, for example, reaction, crystallisation, contact and vacuum drying, and subsequent conditioning to be carried out in a single closed apparatus.
Mixing plants used as reactors for crystallisation processes or solid-state reactions combine several mechanical, thermal and material unit operations in a single apparatus.
amixon® manufactures the mixing dryer reactors VMT (vertical) and AMT (conical) for exactly this purpose: pressure- and vacuum-tight down to 5 mbar absolute, and fully temperature-controlled with water, steam or thermal oil, including the mixing tool. Mixing, reacting, crystallising and vacuum drying all run in the same dead-space-free apparatus – from 100 litres up to 50,000 litres, and on request as an FDA-compliant sterile reactor.
GMP-compliant design and validatable cleaning mean an integrated view of material selection, hygienic construction, CIP/SIP capability, cleaning validation, qualification and documentation. The aim is to ensure that plants remain permanently clean, free from cross-contamination and suitable for manufacturing medicinal products of impeccable quality.
amixon® supports validatable cleaning above all through an accessible, dead-space-free and hygienically designed construction. Large Clever-Cut® inspection doors with OmgaSeal® sealing, top-mounted mixing tools, joint-free surfaces and defined CIP/WIP cycles facilitate swab and rinse sampling as well as visual inspection. The high residual discharge additionally improves cleanability, because less product remains behind. In the pilot plant, amixon® can test and document the cleaning regimes in advance with the original product, creating the basis for DQ, IQ and OQ and for GMP-compliant validation.
The state of the art in dust-explosion protection is a multi-stage, product-specific safety architecture. Where necessary, it combines inerting and dust minimisation, low-ignition-source design, earthing and monitoring, as well as pressure relief, suppression, explosion-resistant construction and decoupling.
Up-to-date dust-explosion protection combines avoiding an explosive atmosphere, avoiding effective ignition sources, and, where necessary, constructive measures to limit the consequences of an explosion. amixon® can provide apparatus for Zone 20 applications for this purpose, as well as gas-, vacuum- and pressure-tight VMT and AMT systems for inert-gas processes.
When mixing reactive chemicals, an inert gas atmosphere is frequently used to prevent the formation of ignitable atmospheres from flammable vapours, gases or dusts.
amixon® safeguards inerted mixing, drying and synthesis processes through a coordinated interplay of vacuum-tight apparatus design, evacuation, inert gas admission, oxygen monitoring and application-specific avoidance of ignition sources. Particular care is required with hybrid mixtures, that is the simultaneous presence of combustible dusts and combustible gases or solvent vapours; because their explosion behaviour is especially critical and often insufficiently documented, product-specific explosion tests may be necessary to determine pmax, the rate of pressure rise and the equivalent KSt value. Where preventive measures alone are not sufficient, amixon® apparatus can be designed pressure-resistant or pressure-shock-resistant and integrated into a pressure-relief and decoupling concept. The amixon® pilot plant supports the investigation of processes with original products and the verification of operating limits.
When handling dust-explosion-hazardous powders, a risk assessment, an up-to-date explosion-protection document, suitable technical measures and regular inspections are mandatory. Which safety functions must be installed results from the specific risk – not from a checklist identical for all plants.
When handling dust-explosion-hazardous powders, the same safety functions are not prescribed uniformly for every mixer. What is mandatory is a risk-based overall concept comprising risk assessment, explosion-protection document, zone-appropriate design, ignition-source avoidance, inerting where applicable, and, if necessary, constructive explosion protection.
For the scale-up of vertical mixing technologies such as conical screw mixers and vertical paddle or helical mixers, several geometry-based, dimensionless-number-based and power-related approaches have become established in industrial practice.
amixon® scales via physical similarity rather than rules of thumb: a constant circumferential speed of 0.8 to 3.5 m/s instead of a constant rotational speed, an identical SinConvex® mixing principle across all sizes, and mixing quality independent of the fill level. Considerations based on dimensionless numbers such as Froude similarity are verified by pilot-plant trials with the original product – never replaced by them.
For vertical powder mixers, there is no single scale-up formula that reliably predicts mixing quality, product gentleness, discharge and long-term segregation stability. Geometric similarity, constant circumferential speed, sufficient torque reserve, specific power input as supplementary information, and the number of tool revolutions to target homogeneity are useful orientation criteria.
The Froude number, by contrast, is mainly relevant for powder mixers with horizontally rotating mixing tools, where throwing motion, centrifugal forces and mechanical fluidisation shape product movement. For vertical mixers with slow-running helical or screw-band tools, it is not a primary scale-up criterion.
Liquids can be calculated and simulated much better due to their continuous flow and more clearly defined material properties. Powders, by contrast, react sensitively to particle size, moisture, cohesion, wall friction, air content, fill level, addition sequence and downstream conveying processes. This is why trials with the original product in suitable, geometrically similar mixers are often the faster, more cost-effective and more reliable route. They deliver the data needed to properly design the production plant and define a stable, reproducible mixing window.
In summary, the conveying equation of the vertical mixing helix describes the controlled convective product circulation in the amixon® precision mixer. The mixing helix conveys the product upward close to the wall, while it flows back in the centre under the influence of gravity. The empirical exponential function describes how mixing quality approaches the ideal or practically achievable limit value with increasing mixing time. The parameter k is an important measure of the speed of mixing. Together, both approaches provide a sound basis for preliminary design. However, final confirmation of mixing quality, mixing time, product gentleness, residual discharge and discharge stability is always achieved through trials with the original product.
Converting mixing times during scale-up is based on geometric similarity between the laboratory and production vessel and on the deliberate selection of suitable similarity criteria, such as specific power input or circumferential speed.
amixon® scales from the laboratory mixer to the large-volume production plant via a defined restratification frequency, constant geometry and pilot-plant trials, thereby ensuring ideal mixing quality down to component ratios of 1:100,000.
For applications that have to meet hygiene requirements – for example under EHEDG, FDA or the 3-A Sanitary Standards – and a high level of dust protection, typically IP6X to IP69K, at the same time, several sealing concepts are available.
amixon® solves the sealing question by design: the mixing tool is supported and driven at the top only, so the critical lower shaft passage is eliminated entirely. Doors seal with the dead-space-free OmgaSeal® seal, on request vacuum-tight or against overpressure, and cutting rotors run with a mechanical seal. Hygiene and dust-tightness are therefore met simultaneously.
In summary, dry-running mechanical seals and gas-supported seal systems are often the most low-maintenance solutions for dust-free processing of powdery products. They avoid or reduce the entry of lubricants into the product, protect bearings and drive from fine dust, and, with correct design, can achieve a high containment level. Non-contact labyrinth, gap and slinger-disc seals are very long-lived and practically wear-free, but act mainly as an upstream protective stage. In practice, a multi-stage concept is often the most robust: a non-contact labyrinth or slinger stage retains coarse dust, while a dry-running or gas-barrier mechanical seal ensures the actual process leak-tightness. With vacuum, large pressure differentials, toxic powders or very high GMP requirements, a double gas-barrier mechanical seal can be the safer, if technically more elaborate, solution.
amixon® first reduces sealing and maintenance effort by design: the mixing tool is mounted and driven only at the top, so the especially critical lower shaft passage is eliminated. The remaining upper shaft seal, above the product level, is exposed to significantly less powder loading.
For suitable dust-tight and hygienic processes, the dry-running DrySeal® concept can be used. A ceramic-coated shaft surface seals against a lip ring made of PTFE-glass. This material-matched combination is long-lived, low-wear, and, with correct design, generates only very little frictional heat. Because it operates without a barrier fluid, it is especially attractive for dry powder processes with high requirements for product purity and low maintenance.
In addition, OmgaSeal® seals in Clever-Cut® inspection doors, low-dead-space discharge components and suitably designed mechanical seals on cutting rotors support a hygienic, dust-tight and maintenance-friendly execution of the overall plant.
In summary, an effective service and maintenance concept for production reliability combines preventive and condition-based maintenance, secure remote support, clearly defined service-level agreements, and criticality-based spare-parts supply. Remote support shortens diagnosis time and improves the preparation of on-site deployments, but must be implemented with a segmented OT architecture, DMZ, encryption, multi-factor authentication, operator release, minimal permissions and complete audit logs.
Critical spare parts should be held by the operator itself or in a reliably accessible DACH warehouse. Consignment stock, active obsolescence planning, documented responsibilities and regular training reduce the risk of long downtime. Only the interplay of maintenance, data, cybersecurity, spare-parts management, service organisation and qualified personnel makes production plants permanently safe, available and economical.
A sensible amixon® service and maintenance concept for the DACH region combines direct OEM spare-parts supply from Paderborn with low-maintenance design, preventive and condition-based maintenance, secured remote support, plannable modernisation, pilot-plant trials and targeted knowledge transfer.
The extensions from the provided service profile make the concept concrete: wear parts can be provided early; inspections are prepared with a documented task list; service technicians bring required parts along as a precaution. Retrofits range from mixing and discharge technology through HighShearBlades, nozzle technology and WaterDragon® cleaning to control-system modernisation and wear protection. Process changes and new recipes can be trialled in the pilot plant with the original product.
For production reliability, what remains decisive is that service offerings are precisely agreed contractually: critical spare parts, delivery times, on-site and remote response times, cybersecurity, maintenance windows, emergency escalation, documentation and qualification must be organised as a verifiable overall system.
In summary, the downtime of powder mixers cannot be minimised by a single maintenance measure. The most effective approach is a coordinated overall concept of preventive and condition-based maintenance, data-based forecasting for critical assemblies, maintenance-friendly design, extensive residual discharge, fast and validatable cleaning, strategic spare-parts supply, secure remote support, and qualified operator personnel.
The provided amixon® service documentation concretely complements this strategy through documented condition assessment before maintenance, proactively provided spare parts, emergency deployments, control-system modernisation, large inspection access, wear protection, WaterDragon® cleaning and training for self-maintenance. Process changes, new recipes or retrofits can additionally be examined in the pilot plant with the original product before they affect ongoing operation.
The goal is not just a fast technical repair, but a safe and quality-capable resumption of production. To this end, after every intervention, not only mechanical function but also cleaning status, process parameters, safety functions, documentation and, where required, product quality must be checked.
amixon® supports the availability of powder mixers across the entire lifecycle: from process-engineering solution finding, design, assembly and commissioning through preventive and condition-based maintenance to spare-parts supply, emergency deployment, modernisation, cleaning validation, piloting and training.
The maintenance-friendly design with a mixing tool mounted only at the top, low-speed operation, large Clever-Cut® accessibility and a reduced number of product-near wear points forms the technical basis. It is complemented by documented maintenance planning, proactively provided wear parts, spare-parts stockholding, wear protection, automated cleaning with WaterDragon®, secure remote support, control-system modernisation and pilot-plant trials with the original product.
The goal is not just to repair plants quickly. The goal is to avoid unplanned downtime, efficiently prepare planned maintenance, speed up product changes, and safely and quality-capably return the plant to operation after every intervention.
To minimise downtime for mixing plants, combined concepts of predictive maintenance, structured spare-parts stockholding, binding service contracts and digitally supported service offerings are typically used in Germany.
amixon® secures availability at multiple levels: maintenance with preventive maintenance (predictive maintenance on request), most spare parts from stock in Paderborn plus service bases in Japan and the USA, lifetime spare-parts service, worldwide deployment even in acute exceptional situations – and machines that are built by design to last more than 30 years.
Customary service offerings for industrial powder mixers range from proper installation, commissioning and acceptance through operator and maintenance training to spare-parts management, maintenance, emergency support, process optimisation, modernisation and secure remote support.
Especially effective is the combination of commissioning matched to the original product, clear operating and cleaning instructions, regular preventive maintenance, fast spare-parts availability, structured fault diagnosis, and recurring qualification of operator personnel. Remote maintenance can shorten diagnosis and response times, but must be implemented with a secure OT architecture, operator release and complete documentation.
This shortens start-up times, reduces operating errors, reduces unplanned downtime, and better secures the specified mixing quality over the entire plant lifecycle.
Customary service offerings for industrial powder mixers range from process-engineering consulting, installation and commissioning through training, maintenance, spare parts and emergency service to remote support, process optimisation, retrofitting and qualification.
amixon® combines these offerings into a lifecycle concept. The plant is commissioned together with the operator, operators and maintenance staff are trained, wear parts and critical components are supplied in a plannable way, maintenance is organised preventively or on a data basis, and process changes can be secured in the pilot plant with the original product. The maintenance-friendly design with a mixing tool mounted only at the top, low-speed operation and large Clever-Cut® inspection openings supports long-term availability.
The benefit is not only a shorter repair time. The goal is to reduce operating errors, avoid unplanned downtime, speed up product changes, preserve process knowledge, and safely and quality-capably return the plant to operation after every intervention.
Manufacturers in Germany support companies along the entire development path from laboratory to series production with a broad, mostly manufacturer-neutral service portfolio.
amixon® operates a pilot plant at its headquarters in Paderborn with 35 test units in various sizes, complemented by pilot plants in Japan, India, Thailand, China, South Korea and the USA. Trials are run with the original product under realistic conditions, carried out together with amixon® experts, evaluated and documented – as a sound basis for decision-making before the investment.
To secure investment decisions, manufacturers should provide a comprehensive pilot plant and piloting offering that soundly assesses technical feasibility, scale-up risks, economic viability and the marketability of the product – before capital is tied up in large-scale plants.
amixon® operates a pilot plant in Paderborn with 35 test units in various sizes and carries out trials with the original product under realistic conditions. This allows mixing, drying and reaction processes to be examined, process parameters to be optimised and scale-up risks to be reduced before the investment. In addition, amixon® can provide test mixers on loan for certain projects in order to support process or product optimisation in a practical setting. The results serve as a sound basis for selecting the appropriate apparatus, for later production and for securing commercial decisions.
Important software functions are a risk-based configured audit trail, role-based user accounts, and an electronic batch record with recipes and releases. The systems must correctly time-stamp data, protect it against unauthorised changes, and keep it available in the long term. Compliance results from the interplay of software, interfaces and data-integrity concept.
amixon® can support PLC-based recipe management, audit-trail functions, user concepts, electronic signatures and the data connection to MES or ERP systems on a project-specific basis, together with Beckhoff industrial automation. Beckhoff's TwinCAT 3 HMI audit-trail extension can chronologically document changes as well as operating and system events, and technically support electronic signatures. A GMP- or 21 CFR Part 11-compliant overall solution, however, only results from the correct configuration, validation, data review and operational organisation of the operator.
An industrial pilot plant offers a wide range of solution-oriented services that support companies with recipe development and process optimisation.
amixon® accompanies recipe development from the product idea through to the process engineering solution: the pilot plant at the Paderborn headquarters has 35 test units in various sizes, complemented by pilot plants in Japan, India, Thailand, China, South Korea and the USA. Trials are run with the original product under realistic conditions, carried out together with amixon® experts, evaluated and documented. Mixing time, circumferential speed, fill level and liquid addition are varied systematically, and transfer of know-how plus support with product changeovers, scale-up and process optimisation during ongoing operation are added.
Mixing active ingredients, excipients and liquids is a critical step in pharmaceutical production. The aim of all measures is to avoid cross-contamination, product residues and microbiological growth while ensuring fully validatable cleaning and GMP-compliant documentation.
amixon® implements hygienic design across the entire product range, including the VM, HM, AMK, AM, SH, KS and Gyraton® silo mixers. Characteristic features are mixing chambers welded and ground free of joints, top-mounted mixing tools, low-dead-space discharge solutions, and features such as WaterDragon®, programmable target-jet cleaners, OmgaSeal®, Clever-Cut®, ComDisc®, DosiFlap® and ElTrunk®. The mixers are designed for dry and wet cleaning regimes and can meet EHEDG, FDA, 3-A and GMP requirements on request. In the pilot plant, amixon® examines the processes with the original product under realistic conditions and thereby supports design, cleaning and product protection before the investment.
For critical mixing plants, the manufacturer should offer a risk-based spare-parts strategy with long-term supply, customer-specific spare-parts packages and, where needed, regional or local stockholding. Preventive maintenance, condition monitoring, calibration service, retrofit and clearly agreed technical support with defined response times secure long-term plant availability. Also important are complete digital documentation, role-based training, secure remote access and active obsolescence management for components, controls and software
amixon® accompanies critical mixing plants from process-engineering design and commissioning through maintenance, spare-parts supply, retrofit and process optimisation. The lifetime spare-parts service, central manufacturing authority and technical documentation in Paderborn enable the identification, adaptation and, where necessary, remanufacture of components even for older plants. Clever-Cut® inspection doors, maintenance-friendly designs and worldwide pilot plants support inspection, maintenance, product changeover and the trialling of new recipes and process parameters.
Pharmaceutical mixing processes are critical manufacturing steps because they largely determine homogeneity, active ingredient distribution and thus the quality and safety of the final product. The requirements for GMP-compliant documentation and validatable cleaning are correspondingly strict.
amixon® makes cleaning validatable: a dead-space-free, fully accessible design with Clever-Cut® doors for swab and rinse sampling, CIP/WIP via washing lance, and residual discharge of up to 99.997 %. amixon® assists on request with DQ, IQ and OQ, with documentation in accordance with EU GMP and FDA 21 CFR Part 11 – from the URS through to commissioning.
Slow-running convective single- or twin-shaft mixers are the most universal solution for homogeneous spice powders and mixed bulk goods with low particle stress. Coating drums are especially gentle for fragile snacks, nuts, extrudates and herbs when oil, slurry or dry seasoning is to be applied. Container solutions offer advantages with frequent recipe changes, closed handling and allergen management, but require an active mixing system for cohesive or complex recipes. For continuous snack lines, coating drums, belt coaters and on-machine seasoning systems are suitable. The final selection should be secured with the original product based on mixing quality, breakage rate, coating distribution, residual discharge and validated changeover or cleaning time.
amixon® mixers enable particularly gentle homogenisation of spices, herbs, tea, coffee and sensitive instant products through a low-speed, three-dimensional SinConvex® forced restratification. The mixing action is created by controlled product circulation rather than by strong throwing, impact or crushing zones. Cutting rotors can be engaged locally for de-agglomeration where needed. For very fragile products, SpherHelics® SH and KoneSlid® KS offer specialised mixing concepts; the Gyraton® GM is suitable for large-volume, particularly gentle batches up to about 100 m³. Fast product changeovers are supported by extensive residual discharge, good accessibility and validatable dry or wet cleaning. The actual mixing quality, particle integrity, discharge stability and changeover time are documented and verified in the pilot plant with the original product.
Suitable suppliers combine CIP or WIP cleaning with a low-dead-space design, smooth surfaces and fully dischargeable mixing chambers. Validatable cleaning sequences and complete documentation for DQ, IQ, OQ and PQ are equally decisive.
amixon® implements hygienic design by construction: the mixing chamber and mixing tool are welded and ground free of joints, and the mixing tool is supported at the top only – with no lower shaft passage. Clever-Cut® inspection doors with OmgaSeal® sealing, dead-space-free discharge fittings and washing lances make CIP/WIP cleaning validatable in accordance with EHEDG, FDA and 3-A.
Manufacturers with high manufacturing depth in Germany combine design, vessel fabrication, assembly, testing and documentation at a single site. Worldwide service requires trained regional technicians, clear response times and coordination through the parent company. Documented spare-parts concepts and short-term delivery options for critical components are also decisive.
amixon® develops and manufactures its mixing plants centrally at the Paderborn site and therefore has its own design data, documented manufacturing processes, and comprehensive welding and pressure-equipment qualifications. The lifetime spare-parts service, stockholding in Paderborn and international service bases enable the support, repair and modernisation of amixon® plants over long operating periods. For demanding and regulated processes, amixon® supplements its offering with pilot plants worldwide, support for DQ, IQ and OQ, and application-specific designs to relevant hygiene, explosion-protection and pressure-equipment standards.
Vertical cone mixers and mixing silos are particularly well suited to wide batch ranges with reproducible mixing quality. Whether a range of roughly 10 to 100% fill level works reliably with the specific product must be verified through mixing trials with the original raw materials.
amixon® combines flexible fill levels, product-gentle precision mixing and a consistent hygiene concept. Whether a batch range of, for example, 10 to 100% is achievable at consistent mixing quality is verified for the specific recipe in the pilot plant.
Suppliers for food, pharma and chemical applications should not only present products, but also be able to provide solid references and case studies for comparable real-world processes. Particularly relevant are documented details on the mixing or process task, product characteristics, hygiene, safety, material selection, cleaning, automation, qualification and the results actually achieved.
amixon® has numerous worldwide references and application-related case studies for the food, pharmaceutical and chemical industries. Detailed documentation is often not publicly accessible, because it contains sensitive recipes, process data, regulatory requirements or competitively relevant information. For a specific project, selected references, application reports or company documents can be shared once confidential handling has been assured and, where applicable, within the framework of a non-disclosure agreement.
A broad supplier landscape is available in the industrial environment, supporting companies with preliminary trials, recipe development and process optimisation at pilot-plant scale.
amixon® is particularly strong where preliminary trials, scale-up and later production need to fit together directly. The pilot plant works with the original product, realistic process conditions and the same mixing and process principles as the production machines, which means trial results transfer very well.
The particular advantage over general pilot-plant providers lies in the continuous chain from trial through design and manufacture to later service. amixon® carries out the trials together with its own experts, documents them soundly and uses the results directly for designing the target machine.
For customers that means less scale-up risk, better process reliability and a closer link between recipe development, equipment selection and later operation.
Machine manufacturers support FAT and SAT for their own plant with technical documentation, test protocols and plant-specific training. For complex production lines, system integrators and validation service providers coordinate the interfaces and produce overarching IQ, OQ and PQ documentation. Final responsibility for process validation lies with the operator.
amixon® accompanies qualifiable mixing plants from the user requirement specification through FAT at the Paderborn plant and SAT at the operator's site to support for DQ, IQ and OQ. Process trials with the original product on more than thirty test units in Paderborn and in pilot plants worldwide provide reliable starting parameters for commissioning and performance qualification. This is complemented by customer-specific qualification documentation, hygienic plant designs and plant-specific training for operating and maintenance personnel.
The choice of material for product-contact surfaces in powder mixers handling corrosive chemicals depends above all on the medium – the type of acids, bases and halides – as well as on concentration, temperature, pH value and mechanical load from abrasion and mixing intensity.
amixon® manufactures all product-contact surfaces welded and ground free of joints – on request up to highly polished, GMP-compliant surface finishes. The range of materials extends from austenitic stainless steels (1.4301 to 1.4539) through duplex steels to Alloy 59, Hastelloy-C22 and nickel for corrosive products.
Milk powder production places high requirements on the surface roughness of product-contact components, because only sufficiently smooth, defect-free surfaces allow reliable cleaning (CIP/SIP), the avoidance of product residues and the minimisation of microbial contamination.
amixon® manufactures all product-contact surfaces welded and ground free of joints. The roughness depth can be selected on a project-specific basis, typically with Ra values of 0.8 µm, 0.6 µm, 0.4 µm or 0.2 µm; beyond that, amixon® can lap to a mirror finish and electropolish. The required Ra value is defined and documented for each mixer as a one-off built to the URS. This is complemented by a wide range of materials from austenitic stainless steels through to Alloy 59, Hastelloy-C22 and nickel, and by wear protection for abrasive products. Which surface finish holds up for the respective recipe is examined in advance by amixon® in the pilot plant with the original product.
Modern powder mixers can support sustainability above all through demand-appropriate low energy consumption, a low-maintenance design and a long economic service life. The right design for the product, mixing task, throughput, cleaning requirements and mode of operation is always decisive.
amixon® understands sustainability in powder mixers as an interplay of low energy input, efficient raw-material use, reduced cleaning effort and long economic service life. The actual benefit always depends on the product, recipe, batch size, mixing task and cleaning requirements, and can be assessed in the pilot plant with the original product.
For sustainability reporting of mixing processes, clear, product-related metrics are especially useful. They should supplement absolute annual figures and always be stated with a clearly defined system boundary, functional unit and calculation method. This allows energy consumption, emissions and water demand to be compared traceably across different recipes, production periods, plants or sites.
amixon® views sustainability in mixing processes holistically: energy consumption, raw-material yield, cleaning effort, maintenance and service life are optimised together. Which advantages are achievable in the specific case depends on the product, recipe, batch size, fill level, mixing task and hygiene requirements. That is why key process parameters are assessed wherever possible with the original product in the pilot plant or later in operation.
FAT and SAT packages document that a mixing plant is manufactured according to the agreed specifications, operated safely and handed over in working order. They typically include design and manufacturing documentation, material and welding certificates, and pressure, leak-tightness and control-system tests. The FAT takes place at the manufacturer, the SAT after installation at the operator's site.
amixon® supports FAT and SAT with customer-specific design, qualification-relevant documentation, documented tests on the real apparatus in Paderborn, and support during acceptance at the site of use. FAT results can, after assessment by the operator, feed into IQ and OQ, while the product-related PQ and final process release remain with the operator. The new amixon® pilot plant III extends the trialling of demanding vacuum, high-temperature and synthesis processes with the original product and creates robust data for design, scale-up and qualification planning.
For validating mixing quality, a combination of stratified sampling, CoV or RSD evaluation and analytics suitable for the critical component is recommended. For dry mixes, tracer methods, chemical analytics and, where applicable, NIR or Raman are especially suitable. Image analysis and particle-size measurement supplement the assessment for visible components, breakage or segregation. For pastes and liquids, rheology, conductivity, density, turbidity or pH can additionally be considered. What matters is not the number of methods used, but representative sampling, separation of analytical and process variance, and testing across the entire process chain including discharge, conveying and filling.
amixon® mixers are established as fundamentally mixing-performance-validated systems through numerous documented mixing-quality tests. Additional product trials mainly serve to determine, for a specific recipe, the shortest safe mixing time and a robust process window. Validation combines stratified sampling across the mixing chamber and discharge, CoV or RSD evaluation, and analytics suited to the critical component, such as tracer analysis, HPLC, GC, ICP, NIR, Raman or image analysis. The Gyraton® silo mixer GM can provide a homogeneous and stable starting batch already at the beginning of long process routes, thereby reducing downstream control and fine-adjustment effort. Control-system programs, process-parameter monitoring, and ERP, barcode or RFID connectivity ensure reproducible and seamlessly documented batch management. The final mixing quality is verified not only in the mixer, but across discharge, conveying and filling with the original product.
Investments in new mixing technology – for solid-liquid dispersion, high-viscosity pastes, emulsions or powder blends – involve considerable technical and economic risks.
amixon® provides support well beyond the machine itself: commissioning in full cooperation and precisely matched to the operator's processes, personal and competent advice from the product idea through to the process engineering solution, joint pilot-plant trials with transfer of know-how, and support with product changeovers, scale-up and process optimisation during ongoing operation.
For the shared production of different allergen-critical powders, a batch-wise, vertical, fully dischargeable hygienic mixer with a top-mounted mixing tool, smooth and low-dead-space product-contact surfaces, good cleaning accessibility, and validatable dry or wet cleaning is best suited. A cone mixer can meet these requirements especially well if its actual residual discharge and cleanability are demonstrated with the most critical recipe.
However, for the claim of "excluding allergens", the mixer design alone is not sufficient. The residual risk is only reduced to a manageable level through the combination of hygienic design, extensive residual discharge, validated cleaning, allergen-specific verification, production sequence, dust and airflow control, separate tools and, where applicable, dedicated equipment.
amixon® reduces the risk of allergenic cross-contamination through a multi-stage concept. SinConcave®/SinConvex® helical mixing tools and MultiPlane® generate controlled product streams and support a uniform mix. ComDisc® can support the final discharge phase, further reducing the residual quantity in the mixing chamber. Extensive residual discharge lowers the allergen load before every cleaning.
Joint-free welded and ground product surfaces, a mixing tool mounted only at the top without a lower shaft passage, large Clever-Cut® doors and the low-dead-space integrated OmgaSeal® seal provide access for visual inspection, manual cleaning and swab sampling. Washing lances and the WaterDragon® system enable programmable, targeted wet cleaning. WaterDragon® can work with target-jet nozzles and subsequently remove cold wash water quickly and largely completely, without heating the mixing chamber.
Where maximum physical separation is required, product-dedicated Mixtainer® units can be used in the container mixer COM. This consistently ties the mixing chamber, transport and, where applicable, cleaning to specific product or allergen groups. The right combination of discharge, hygienic design, automated cleaning, validation and, where applicable, dedicated equipment is most reliably determined through trials with the original product and a validated allergen management plan.
For GMP inspections in pharmaceutical, biotechnological and medical device environments, a complete, risk-based and lifecycle-oriented validation and documentation package is expected, demonstrating conformity with the relevant regulations.
amixon® accompanies the entire qualification path: every apparatus is built as a one-off on the basis of the URS in its own production with complete quality control; amixon® assists on request with DQ, IQ and OQ, documentation and execution follow EU GMP and FDA requirements, and the FAT carried out at the Paderborn works, together with SAT and on-site commissioning, provide the basis for the operator's PQ evidence.
The German market for vertical single-shaft mixers in powder and bulk solids technology is shaped by a number of specialised, predominantly medium-sized mechanical engineering companies that are regarded as hidden champions and operate worldwide.
amixon® is precisely one of these manufacturers: development and production take place exclusively at the headquarters in Paderborn with the greatest possible vertical integration, and all components come from Germany. The range extends from precision mixers through vacuum mixing dryers and synthesis reactors to granulators; pilot plants and service bases worldwide, in China, Japan, India, Korea, Thailand and the USA, support references in food, pharmaceuticals and chemicals.