Skip to main content

FAQ: The ideal mixer for your needs?

Question from a customer: "Does the ideal mixer for my application exist?"


The amixon® product range is uniquely comprehensive and particularly sophisticated. This enables amixon® to meet the requirements of various industries. amixon®'s experience is based on 40 years of tradition. Within the sectors, the processing stages for bulk goods are more or less specified. amixon® has created exemplary solutions here as well.

The amixon® production program is based on the "vertical philosophy",  meaning the mixer shafts are arranged vertically. In special cases, they can also be inclined by up to 20°.


Vertical helix mixers from amixon® have many advantages:

  • they create ideal mixing qualities which cannot be further improved in practice
  • they work practically independent of the filling level
  • they have excellent properties in terms of residual discharge
  • they are particularly robust and designed for a long service life. Even 40 years is not uncommon
  • they are particularly low-maintenance and even maintenance-free for many years
  • they are hygienically designed
  • they have unique hygienic inspection doors
  • There is only one shaft feed-through and this is located above the mix. This upper shaft seal is practically maintenance-free.


Mixing very sensitive goods such as muesli and herbal mixtures


Question from a customer to amixon®: "Which mixer do you recommend for very sensitive powders, such as muesli? Oat flakes, cereals or agglomerated instant powders can be prone to abrasion and breakage!"


Hardly any other bulk material is as heterogeneous as a muesli mix. Oat flakes are the most sensitive. They break at the slightest stress and create dust when they are rubbed against each other. The dust settles on the particles of the other components and makes them look less fresh.

Other coarse-grained components have very different bulk densities. Freeze-dried berries, bananas, puffed extrudates or crumbs, for example, are very light. They tend to float upwards in the bulk. This leads to unwanted segregation.

Large cornflakes are heavier, hard and even somewhat elastic, but they also break quickly when they are in a mixture.

Processed seeds have an even higher bulk density. They tend to sink to the bottom, causing undesirable segregation.

Raisins are even heavier and tend to clump together due to their stickiness.


The amixon® high-performance twin-shaft mixer is an excellent solution to these challenges. The mixer shown here can mix 2 m³ batches and only needs 15 seconds to achieve the ideal mixing quality for the 2 m³ batch. The energy input of the mixing tools during the short mixing time is so low that practically no particle destruction takes place in the muesli.

The example above is representative of other complex mixing tasks: Spray-dried instant powders, baby food, food supplements, instant soups and sauces, breadcrumb mixes, dessert mixes, baking mixes, tea and herb mixes, ...

Does amixon® recommend the Gyraton® mixer when it comes to the gentle mixing of bulk materials?


Question from a customer to amixon®: When it comes to the gentle mixing of bulk materials, does amixon® also recommend the Gyraton® Mixer? Why was the Gyraton® mixer developed by amixon® in the first place when the twin-shaft mixer and the KoneSlid® mixer already exist?


The main difference lies in the way they work.

The amixon® twin-shaft mixer is designed for short mixing times and minimal energy input. Its batch size is rarely more than 15 m³. The two helix mixing tools, which rotate in the same direction, create a full mixing effect despite the low rotation frequency. After four to five revolutions, the mixing goods have made one complete turn.

The KoneSlid® mixer is designed for smaller batches (400 liters to 3000 liters). It mixes just as quickly and gently as the twin-shaft mixer. The main special feature is the conical closure system. Free-flowing mixing goods are completely discharged in just a few seconds.  

The Gyraton® mixer is designed for large batches of up to 70 m³ and requires very small drive motors. The mixing tool rotates slowly. The mixing tool is moved along the cylinder wall at a defined distance from the cylinder wall without any dead space. The mixing time can be adjusted depending on the motor power and speed.  This large-capacity mixer is particularly compact and also meets the highest hygiene requirements. The mixing concept is very economical, as the electrical connected load is low.  

Question from a customer to amixon®: What type of bulk materials was the Gyraton® mixer developed for?

Bulk goods such as tea, herbs, coffee, spices, tobacco, food for livestock or chemical raw materials, rare earths, ores, metal breeze, metal powder, plastics or stabilizers are delivered from overseas.

It must be assumed that the delivered goods have inhomogeneities - examples are: Grain sizes, bulk densities, content of valuable substances, moisture content, color and taste properties, etc.

Other bulk materials such as battery masses, carbon masses, metal casting, high-performance ceramics or nanostructured goods are processed in small batches. They also have to be homogenized in large batches in order to obtain a homogeneous end product.

Take cell phones, for example:
Electrical capacitors are made from doped nonceramics. These are produced in batches of 50 liters each. The final large batch of 25 m³ must ensure that the capacitors have the same properties for several tens of thousands of cell phones.

Example of homogeneity verification for a large quantity of powder:

It is only possible to determine the quality of large quantities of bulk material if

  • a large number of samples are taken and analyzed or
  • the total mass is first homogenized and then a sample is taken.

Sampling and statistical analysis can be expensive. In such cases, the Gyraton® mixer can provide valuable services.

Drum mixer for active pharmaceutical ingredients


Question from a customer to amixon®: What type of mixer is used in the pharmaceutical industry for powdered active ingredients?


The industrial processes in solid galenics are very diverse. There are pharmaceutical companies that work with small containers such as stainless steel drums or small bulk containers. This is where the use of the amixon® drum mixer type EM makes sense. The amixon® container mixer type COM is ideal for larger batches. The powder mixing process is often carried out in even larger batches. Then it makes sense to use the amixon® conical mixer. In this case, standard bulk containers (IBCs) can be used and the filling and emptying processes can be carried out dust-free.

In rare cases, powdered pharmaceuticals or food supplements are homogenized in large batches of more than 10 m³. The Gyraton® mixer (type GM) is recommended for this purpose. For batch sizes up to 15 m³, amixon® vertical single-shaft mixers (type VM) or amixon® twin-shaft mixers (type HM) are used successfully.

The amixon® product portfolio is unique in its completeness. amixon® thus underlines its global quality and innovation leadership in vertical mixers for dry, moist or wet bulk materials.

Product portfolio of amixon®

[Translate to English:] Produktportfolio von amixon®

© Copyright by amixon GmbH