Roll crusher and crushing method in use for the roll crusher

Details Roll crusher and crushing method in use for the roll crusher Roll crusher and crushing method in use for the roll crusher

1990-09-28

1992-02-18

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

Miscellaneous

2411012, 241227, B02C 442

Patent

active

050886517

ABSTRACT:
A roll crusher having a pair of rolls facing each other, in which feed material to be crushed is fed into a space or a crushing chamber formed in between these rolls, and the pair of rolls rolls up the material to compress and crush it. Both ends of one or the other of the rolls are provided with flanges which cover the lower portions of end openings in the crushing chamber. Cheek plates fixedly disposed cover the remaining portions of the end openings of the crushing chamber. This construction helps prevent feed material from flowing out of the crushing chamber. One of the pair of the rolls is driven for rotation by a source of drive power, and the other is rotated freely as well as driven to rotate initially at low speed, which permits coarse materials to be forcibly entrained in between the rolls for crushing. During the process of crushing, the crushing clearance of rolls is set to 0.6 to 2.4 times 80% passing size of feed material, and feed rate is limited so that passing rate of the material ranges 0.5 to 0.8 times the theoretical throughput capacity of the crusher, which remarkably increases the actual throughput of the roll crusher.

REFERENCES:
patent: 198605 (1877-12-01), Grant et al.
patent: 942865 (1909-12-01), Petersen
patent: 1014383 (1912-01-01), Prazee
patent: 2306427 (1942-12-01), Christman et al.
patent: 3497321 (1970-02-01), Decker et al.
patent: 4377260 (1983-03-01), Huffman
patent: 4703897 (1987-11-01), Beisner et al.
patent: 4905910 (1990-03-01), Wuestner

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