Continuous cycle apparatus for separating precious metals from c

Details Continuous cycle apparatus for separating precious metals from c Continuous cycle apparatus for separating precious metals from c

1993-03-31

1994-02-22

Dayoan, D. Glenn

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Sorting special items or sorting by methods and apparatus...

209 18, 209458, 2101953, B03B 100, B03B 700

Patent

active

052879755

ABSTRACT:
A continuous cycle apparatus for separating particles of precious metals from concentrate having a funnel-shaped hopper. A pump circulates a portion of the water from a sump into the hopper to create a vortex of water and concentrate such that less dense material tends to overflow from the hopper into the sump. The pump also circulates a portion of the water from the sump through a tube connected to a bottom opening in the hopper to transport concentrate and water to a sluice box which collects particles of precious metals contained in the slurry. The rate at which water and concentrate are drawn from the hopper is adjustably controlled by a metering rod located in the tube immediately below the bottom opening in the hopper. The water and remaining particles drain from the sluice box back into the hopper to complete the cycle.

REFERENCES:
patent: 1352882 (1920-09-01), Donegan
patent: 1491296 (1924-04-01), France
patent: 1632210 (1927-06-01), Baldwin et al.
patent: 4319985 (1982-04-01), Hibbard
patent: 4525270 (1985-06-01), McCann
patent: 4642180 (1987-02-01), Kaufman
patent: 4826251 (1989-05-01), Balkus
patent: 5032276 (1991-07-01), Mackrle et al.
patent: 5108584 (1992-04-01), Brosseuk

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