Title:
ROLL CRUSHER AND METHOD OF CRUSHING USING THE SAME
Document Type and Number:
WIPO Patent Application WO/1988/008330
Kind Code:
A1
Abstract:
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.
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Inventors:
Takahashi
Nobuhiro, Takagi
Fumio
Nobuhiro, Takagi
Fumio
Application Number:
PCT/JP1988/000416
Publication Date:
November 03, 1988
Filing Date:
April 27, 1988
Export Citation:
Assignee:
Nittetsu
Mining
CO., LTD.
Takahashi, Nobuhiro
Takagi, Fumio
Mining
CO., LTD.
Takahashi, Nobuhiro
Takagi, Fumio
International Classes:
B02C4/02; B02C4/28; B02C4/30; B02C4/32; B02C4/42; (IPC1-7): B02C4/30; B02C4/32; B02C4/42
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