Static classifier
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United States of America Patent
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May 29, 2018
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app pub date -
Sep 8, 2014
filing date -
Sep 9, 2013
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Abstract
Classifier (10, 100, 200) which is configured to classify air-entrained, crushed particulate material received from a pulverizer into a fine fraction which is expelled from the classifier (10) and a coarse fraction which is returned to the pulverizer for further crushing. The classifier (10) includes a plurality of adjustable inlet blades (37) which are arranged partially above an inlet (20) leading into a classification zone (19), an angle of the blades (37) being adjustable through manipulation of a blade adjustment mechanism (39) in order to optimize particle flow conditions inside the classifier (10). Furthermore, the classifier (10) includes a plurality of inclined pre-swirl vanes (47) which are disposed below the inlet blades (37), each vane (47) having a curved body. The classifier (100) includes a part conical member (102) which is suspended below an operatively upper exit (31) leading from the classification zone (19).
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