mixing test
A mixing test can have different objectives. One objective, for example, is to determine the fundamentally achievable mixing qualities of different mixing systems. A defined reference recipe is used for this purpose. This enables reproducible and comparable analyses. The aim is to objectively compare different mixing principles.
The investigations can be systematically expanded. For example, the filling level can be varied. The same applies to the rotation frequency and mixing time. The moisture content of the mixture can also be changed. In addition, particle stress, the tendency to segregate and the achievable residual emptying levels are considered. For such test series, several mixing machines from different manufacturers with comparable batch sizes must be available.
In practice, the user usually makes a preliminary selection. The aim is to limit the number of tests required. The mixing tests are usually carried out in the technical centre of the respective manufacturer. Several sophisticated formulations are prepared for this purpose. It is advisable to prepare several batches for each formulation. This allows different operating modes to be compared.
During the test, the usual driving mode of the user is first implemented. This is followed by a test in accordance with the mixer manufacturer's recommendation. A further approach serves to optimise or confirm the results. In this way, optimisations can be made. In addition, the robustness of the process can be assessed.
In some cases, the mixer manufacturer can offer several seemingly ideal solutions. This is particularly possible during trials at amixon GmbH, where more than 30 test mixers are available in a total of six different types. Depending on the task at hand, one or two suitable solutions can be identified. The trials then quickly reveal which mixer design is preferred by the customer.
The results are evaluated based on many criteria. These are often not known in detail to the machine manufacturer. In addition to the mixing quality, the complete emptying capability and suitability for dry cleaning are also assessed. Cleanability using wet methods also plays an important role. Modern wet cleaning systems, such as programmable target jet cleaners, enable short cleaning times with low water consumption. All these aspects are part of a complete mixing test.
Some mixed goods are particularly sensitive. Muesli is one example of this. In such cases, it makes sense to carry out at least one trial in a large-scale mixer. If subsequent production is to involve batches of around 3 m³, at least one trial should be carried out in a mixer with a usable volume of 2 or 3 m³.
Economic and ergonomic aspects are also taken into account in the decision. These include the investment price, maintenance costs and space requirements. Integration into existing production processes is also relevant. Since the service life of an amixon® mixer is more than 30 years, plant planning is particularly important. The installation situation at the customer's premises can be digitally recorded by amixon. On this basis, three-dimensional layout variants can be created. This allows material flows and work processes to be simulated. The result is a reliable layout drawing that serves as the basis for the investment decision.
FAQ - mixing test
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.