Centrifugal size-separation sieve for granular materials
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United States of America Patent
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Jul 7, 2015
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Oct 17, 2013
app pub date -
Apr 17, 2012
filing date -
Apr 17, 2012
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Abstract
A centrifugal sieve and method utilizes centrifugal force in rapidly-rotated cylindrical or conical screens as the primary body force contributing to size segregation. Within the centrifugal acceleration field, vibration and/or shearing flows are induced to facilitate size segregation and eventual separation of the fines from the coarse material. Inside a rotating cylindrical or conical screen, a separately-rotated screw auger blade can be used to transport material along the rotating cylinder or conical wall and to induce shearing in the material.
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