UNIT FOR CRUSHING BRITTLE MATERIALS Russian patent published in 1995 - IPC

FIELD: comminution. SUBSTANCE: unit comprises housing 1 having casing 2, feed hopper 3 and drive 4 enclosed in it along with a pair of fluted rolls 5,6, and additional roll 7. Grid 21 is provided for separating glass crumb from sealing plugs and rolled-up metal caps. Mate rolls have faces which central angles are equal. The faces defining the work nip have a clearance equal to the 0.75-0.8 height of the seal plug. EFFECT: more efficient waste reprocessing. 2 dwg