ROLL CRUSHER AND METHOD OF CRUSHING USING THE SAME

WIPO Patent Application WO/1988/008330

A1

In a roll crusher of the type wherein an object to be crushed is fed into a crushing chamber defined between a pair of rollers facing each other and is compressed and crushed between these rollers, a flange (12) is formed at both ends of either one of the rollers (3) in such a manner as to cover the lower parts of both end openings of the crushing chamber, and the remaining portions of the both end openings of the crushing chamber are covered with a holding member (11) disposed fixedly. This structure can prevent the object from overflowing from the crushing chamber. If one of the pair of rollers is used as a driving roller with the other being permitted to rotate freely and the two are rotated at low speed at an initial stage, even coarse particles can be forcibly entrapped and crushed. Crushing capacity of the roll crusher can be improved remarkably by setting the crushing gap between the rollers to 0.6 to 2.4 times a particle size that permits 80% of an object to pass and by controlling feed quantity so that the quantity of the passing object is within the range of 0.5 to 0.8 times the theoretical capacity of the crusher.

JP3634552	ELECTROPHOTOGRAPHIC PHOTORECEPTOR
JPH058568	[Name of device] Electrophotograph recording device
JPS58156949	PHOTOCONDUCTIVE MATERIAL

TAKAHASHI NOBUHIRO (JP)
TAKAGI FUMIO (JP)

PCT/JP1988/000416

November 03, 1988

April 27, 1988

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NITTETSU MINING CO LTD (JP)

G03G5/08; B02C4/02; B02C4/28; B02C4/30; B02C4/32; B02C4/42; G03G5/082; G03G5/14; (IPC1-7): B02C4/30; B02C4/32; B02C4/42

JPS62140946U	1987-09-05
US3497321A	1970-02-24
JPS297694Y1
JPS3522688Y1
US4377260A	1983-03-22
JPS5761457B2	1982-12-24
JPS59160541A	1984-09-11
JPS59186652A	1984-10-23

See also references of EP 0328647A4

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