Fine Grinding an overview | ScienceDirect Topics
For very fine grinding (lt; 10 m) of dry plant material, we use a device made up of a cylindrical rotor turning at 3,000 1 in a stator with a slightly bigger diameter. Rotor and stator surfaces are equipped with parallel corrugations along the vertical axle. Fines are pulled toward the top. Pin mills have two discs equipped with pins that are parallel to their axle. One