METHOD OF DISINTEGRATING LUMPY STOCK Russian patent published in 2012 - IPC B02C13/00 B07B7/83 

FIELD: process engineering.

SUBSTANCE: invention relates to concentration of minerals, particularly, to disintegration of rocks containing useful components either separated or as rock joints. Proposed method comprises feeding lumpy stock into work chamber inner space, crushing it in bottom section, disintegrating and accelerating to collision with side wall of said chamber and its cover, and releasing disintegrated stock from side opening of said chamber and its cover. Said stock is disintegrated by rotary crushing elements fitted at different levels to form annular crushing surface made up of to and bottom crushing elements. Rotation of two parallel annular and one disk elements arranged above annular crushing surface and jointed by radial vanes allows forming two airflows: one is directed from work chamber into space between adjacent surface of annular elements toward work chamber wall via slotted space between said wall and rotating crushing elements and, further, as an upward flow, into work chamber space, while another flow is directed from work chamber together with disintegrated stock particles in space between surfaces of annular and disk elements and into work chamber bottom section for subsequent extraction therefrom.

EFFECT: higher efficiency of concentration.

2 cl