Micronization

Micronization is a process for the significant reduction of particles by grinding. This average particle sizes are greatly reduced. The micronized powder produced thereby are used in different branches of industry. So usual grain sizes between 100 microns can be reduced to 1000 microns to a range of 2 microns to 200 microns in the field of technical powder as well as in flours and fruit powders.

In some applications, a narrow particle size distribution is required and can be reached by micronization. Thus, a perception on the skin grain sizes below 70 microns are to avoid targeted and to avoid a mouthfeel grain sizes below 40 microns.

Benefits

One advantage of such a scaled- particle inter alia the increased surface area, which is an important parameter for many interactions with the environment (eg, diffusion processes, dispersing ).

Methods

A classical method for the production of such fine particles is spray drying, but the rule only with water-soluble substances is possible and not generally gets along by the introduction of heat without change of material properties. Spray drying also meets with particle sizes below 100 microns to their limits.

Further there is also the method of counter jet mills with compressed air, wherein the material is accelerated and collides with each other. With this method you can reach a size under 10 microns.

Micronizing the reduction is carried out purely mechanically in specially adapted to the product mills, so that the manufacturing process essentially takes place gently. This makes it possible to maintain the material properties.