Method and apparatus for recovering small particles of heavy pre

Details Method and apparatus for recovering small particles of heavy pre Method and apparatus for recovering small particles of heavy pre

1976-08-25

1977-06-28

Dost, Gerald A.

Metallurgical apparatus

Means for treating ores or for extracting metals

Amalgam-type extraction means

266170, 266204, C22B 1110

Patent

active

040321223

ABSTRACT:
There is disclosed a method and apparatus for recovering small particles of gold or platinum from a slurry by feeding the slurry onto a layer of Mercury which is flowing downwardly along a generally conical, downwardly converging inner wall of a housing. The housing is rotated about the vertical axis of the conical wall at a speed which induces particles to settle out or a malgamate with the layer of Mercury and causes the remainder of the slurry to move upwardly over the Mercury layer and out of the housing. Upon collection and separation of the particles therefrom, the Mercury is returned to the housing for resupply to the inner wall thereof so as to maintain a continuous layer of Mercury.

REFERENCES:
patent: 196204 (1877-10-01), Eaton

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