Process technologies for tomorrow.


Hosokawa Micron provides excellent mixing and drying solutions for gypsum powder, for example in the production of fertilizers or construction materials such as plaster (plasterboard) or as a concrete additive.

Gypsum drying

DMR flash mill dryer DMR flash mill dryer

In most cases, the dry gypsum needs processing. Sometimes the water hydrate needs to be removed, resulting in a hemi-hydrate or anhydrite form. Whatever form is required (di-hydrate, hemi-hydrate or anhydrite), it’s always very important to control the hydration state. The dryer you select should be able to control this state closely. One excellent choice would be the DMR flash mill dryer, which is capable of producing hemi-hydrates.

Gypsum mixing

For the production of construction materials, water is mixed to the hemi-hydrate to form a di-hydrate. This reaction can be accelerated by adding a small amount of water to the powder before adding the full complement of water. The Flexomix continuous mixer is perfect for this kind of wetting or moisturizing. By bringing each particle into contact with a small amount of water, the particles become more receptive to the rest of the water that is required.


Test Centre in Doetinchem, the Netherlands Test Centre in Doetinchem, the Netherlands

Our test and process development centre in the Netherlands offers unique possibilities for testing your product to determine the most efficient process, system or plant prior to final design. We can provide laboratory-level as well as production-sized trials.

Whether you wish to test a single machine or a complete powder processing system, the same skilled and experienced staff are here to help ensure that your requirements are met, and that you are entirely satisfied with the results.

We offer process equipment and technologies from individual units to large scale bespoke system solutions. Our principle is to deliver high performance yet affordable solutions that meet our customers' demands and long term challenges.


To learn more about our processing equipment and systems for gypsum powder, contact us:



Hosokawa Micron B.V. is certified according to ISO 14001. Our certification covers all environmental themes of ISO 14001: air, soil, energy, waste, water, noise and hazardous substances. In addition, Hosawa Micron was awarded an EcoVadis Silver Medal for its sustainability achievements. EcoVadis determined that the company was among the top 15% of companies rated by EcoVadis in the special machinery industry.

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