Fiber recovery elutriating hydrocyclone
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United States of America Patent
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-
Sep 29, 1987
Grant Date -
N/A
app pub date -
Feb 28, 1986
filing date -
Feb 28, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method of centrifugally separating, cleaning or classifying solids contained in a fluid flow delivered to a hydrocyclone 2 through inlet 28 wherein the removal of unacceptable material, i.e. rejects, is enhanced and the loss of acceptable material in the rejects is reduced by introducing a secondary fluid having a solids content of less than about 0.2% by weight into the separating chamber 24 through inlet 38 in a substantially helical swirling flow pattern coaxially about the vortex formed by the solids containing flow. An additional flow of low-solids secondary fluid is introduced into a secondary separating chamber 64 disposed at the apex end of the hydrocyclone 2 to receive the rejects flow from the primary separating chamber 24.
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