Solid bowl decanter centrifuges
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United States of America Patent
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-
Nov 3, 1981
Issued Date -
N/A
app pub date -
Aug 3, 1979
filing date -
May 24, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solid bowl decanter centrifuge of the scroll discharge type comprises a solid bowl which rotates at a first speed, and a scroll conveyor which is rotated within the bowl at a second, slightly different speed for conveying separated solids to a solids discharge end of the bowl. The suspension to be centrifuges, substantially unmixed with a flocculant, is introduced by a stationary feed pipe into a feed compartment which is a radial passage in the conveyor. The feed compartment provides high turbulence and shear forces which mix and expel the suspension and flocculant into the bowl before flocs have formed.
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