METHOD OF AND CENTRIFUGAL DISK MILL FOR FINE GRINDING OF MATERIALS Russian patent published in 1999 - IPC

FIELD: mechanical engineering. SUBSTANCE: according to method of fine grinding of materials including collision of material particles in rarefaction, grinding is carried out in disk mill at ratio of value of residual pressure, mm Hg, in working chamber and peripheral velocity, m/s, in peripheral part of disk being ≤0,5.. Centrifugal disk mill for fine grinding of materials implementing this method has disks rotating in opposite directions and ring projections of C-shaped cross section on periphery of disks. Mill is furnished with metering device in form of chamber to upper hole of which vacuum separator is connected communicating with collecting hopper and vacuum pump. Impeller is installed on lower disk, and self-lining trap is mounted on housing. EFFECT: reduced wear of partition, enhanced cleanness of final product. 6 cl, 5 dwg