Metal separating process and apparatus

Details Metal separating process and apparatus Metal separating process and apparatus

1975-09-15

1977-02-15

Lutter, Frank W.

Classifying, separating, and assorting solids

Stratifiers

With liquid treatment

B03B 574

Patent

active

040081524

ABSTRACT:
Heavy metals such as gold, silver platinum, copper, etc., in the free state, are separated from their ore by applying water and the ore in finely divided form to at least three rotating, inclined, spiral grooved discs driven from a common shaft. The grooves are closely spaced and with declining pitch from the periphery to an annulus at the center of the disc. The free metal tends to sink to the bottom of the grooves and the lighter ore is washed away as the metal moves along the spiral grooves to the annulus. The free metal and any remaining ore is fed from the annulus to the succeeding disc and the process is repeated.

REFERENCES:
patent: 987866 (1911-03-01), Earle
patent: 1081421 (1913-12-01), Arnold
patent: 1985514 (1934-12-01), McCleery
patent: 1986778 (1935-01-01), Hinkley
patent: 2064554 (1936-12-01), Mahoney et al.
patent: 2618388 (1952-11-01), Rawlings

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