Hosokawa Bepex compaction department has now joined Hosokawa Alpine.
Since 1949, Hosokawa Bepex GmbH has specialized in particle size enlargement of fine disperse bulk
material and since then sets standards in this business area. Hosokawa Alpine now supplies these
compacting technology machines and plants for making solid forms out of powders, such as granules or
This process is achieved by compressing powder into solid “flakes”. These flakes can also be softly milled to
the required particle size distribution to result in granulation. This process is widely used in the fertilizer
This process is another process Hosokawa BEPEX offers. This process utilizes specially made compaction
rolls enabling production of a variety of sizes and shapes such as pillow shapes, almond shapes or stick
shapes amongst others. The counter rotating rolls and very tight tolerances of the machine ensure a
consistent end-product. Typical examples using these processes are chemical products, minerals, refractory,
charcoal and metal powder.
High pressure roller grinding
This process is energy efficient and low-wear grinding. In the case of high pressure roller grinding one can
speak of pressure crushing. The prominent feature of crushing is particularly used for abrasive, hard and brittle
products. Typical requirements are steep particles in the range of 100 - 300 µm or also in the millimetre range.
Due to the pressure stress in the material bed particularly sharp-edged, cubic particles develop.
Extrusion is understood as low pressure extrusion for the production of slightly dispersed dust-free granulates
with hard shell and soft centre.
If cylindrical granulates are achieved, typically granulates of 1 to 10 mm diameter are produced. Process is
also available for shingled, highly porous granulates with good dispersal properties. Typical application of the
process in the food industry for instant drinks and soups, pet food and compound mixtures.
The rounding off of pellets is known as spheronisation. This process is often used after an extrusion process in
which soft granulate are produced. The spherical pellets produced by spheronisation have a smooth surface
and a narrow particle size distribution. Typical application of this process is capsule filing, catalysts,
detergents and pigments.