Method and apparatus for comminuting bulk materials
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United States of America Patent
Stats
-
Jun 1, 1993
Grant Date -
N/A
app pub date -
Jul 1, 1991
filing date -
Dec 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process and device for crushing bulk materials. The material to be crushed is fed from above to a first accelerating device which accelerates it into a first crusher, the fine particles in the crushed material produced by the first crusher being carried upwards by an air or gas stream. The larger particles trickle downwards and are then carried by an air or gas stream vertically upwards to another accelerating device which accelerates them into another crusher. The fine particles produced in the second crusher are swept upwards by the air or gas stream, while the larger particles trickle downwards and are brought round to the beginning of the cycle again. The invention concerns the combination of a vertical impact crusher with a separator, both of which are preferably located inside the same housing.
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