Method and apparatus for underground separation, conveyance and fill-up of coal and coal gangues

摘要

A method and apparatus for the underground separation, conveyance, and fill-up of coal and gangues. The method comprises crushing and separating coal and coal gangues two times underground by means of a roll crusher-separator (2) and a hammer crusher-separator (4); feeding the pieces of coal directly into an underground bunker by means of a pneumatic conveyance system (1); crushing the coal gangues into coal gangue fragments by means of a roll crusher (6); and conveying the crushed coal gangues to a goaf to carry out fill-up operations. The apparatus solves the problem of transporting coal and coal gangues underground, economizes underground space, provides large quantities of raw materials for filling-up underground goafs, and helps to avoid problems of cave-ins and the accumulation of coal gangue mounds.