Classifying – separating – and assorting solids – Plural – diverse separating operations – Sifting and stratifying
Patent
1981-02-02
1982-07-13
Halper, Robert
Classifying, separating, and assorting solids
Plural, diverse separating operations
Sifting and stratifying
209251, 209451, 209501, B03B 700
Patent
active
043390439
ABSTRACT:
A self-contained revolving trommel classifying and sluice type recovery plant is described. The trommel screen is perforated and provided with helical corrugations to subject received placer material to several forces which, combined with sufficient water added through provided nozzles, break up the placer material and expose values to the trommel perforations. The perforations are arranged in a continuous pattern within the length of the trommel. Classified material drops through the perforations into an elongated sluice, along with all the accumulated water used in the classifying-washing process. Values are separated from tailings by corrugations along the sluice length. A suction pump operates with a suction hose and settling tank to recover values from the sluice during operation.
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Gold in Placer, Douglas, published by Harnacy, 1944.
Tice Isabelle L.
Tice Richard P.
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