Classifying – separating – and assorting solids – Fluid suspension – Gaseous
Patent
1979-06-28
1981-03-24
Hill, Ralph J.
Classifying, separating, and assorting solids
Fluid suspension
Gaseous
209139R, B07B 7083
Patent
active
042578809
ABSTRACT:
A centrifugal air classifying apparatus for use with a cyclone type centrifugal separator and a fan for drawing air from the separator and returning it at superatmospheric pressure to the classifying apparatus, wherein the classifying apparatus has a rotary particle rejector in its upper portion for classifying material fed into a rising and rotating column of air outwardly surrounding the rejector. A first primary annular sealing zone is provided adjacent the tops of the rejector blades and a secondary annular sealing ring is provided at an intermediate location between the upper and lower ends of the blades.
REFERENCES:
patent: 1146633 (1915-07-01), Lyons
patent: 3384238 (1968-05-01), Alpha
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