MATERIAL GRINDING METHOD AND GRINDER Russian patent published in 1995 - IPC

FIELD: materials grinding. SUBSTANCE: during exercising uniform grinding without using too high pressure or without too big values of return in cycle they use grinder with rotating coaxial ring-type path and roller capable to roll on the path. The roller acts on material under average pressure on layer of material in limits from 10 to 40 MPa and during every turning around of path material is moved on it transversely by distance, that is part of path, due to presence of device for stepped material feeding. Layer of material is formed due to path rotation with supercritical speed. Device for stepped feeding of material is partially located in collecting chamber. EFFECT: improved energetic efficiency of operation. 4 cl, 11 dwg