Metals recovery by flotation

Details Metals recovery by flotation Metals recovery by flotation

1989-05-01

1990-05-29

Schor, Kenneth M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, B03D 102

Patent

active

049293443

ABSTRACT:
Collector compositions for use in froth flotation processes for the beneficiation of gold, silver and platinum group values from base metal ores are disclosed. The collector compositions comprises at least one monothiophosphate compound selected from compounds of the formula: ##STR1## wherein each R is a C.sub.2 -C.sub.8 alkyl or a ##STR2## radical, R.sup.1 and R.sup.2 are, individually, hydrogen or C.sub.1 -C.sub.4 alkyl radicals, n is 0 or 1 and X is a cation. The use of the monothiophosphate collectors provides excellent selective recovery of gold, silver and platinum group metal values in froth flotation processes conducted under alkaline conditions.

REFERENCES:
patent: 2919025 (1959-12-01), Booth
patent: 3317040 (1967-05-01), Booth
patent: 4661278 (1987-04-01), Nagaraj
patent: 4684459 (1987-08-01), Klimpel
patent: 4702822 (1987-10-01), Klimpel
patent: 4822483 (1989-04-01), Klimpel
16 International Minerals Processing Congress, Stockholm, Sweden, Jun. 5-10, 1988--Nagaraj et al.
2nd International Mineral Processing Symposium Izmir, Turkey, Oct. 4-6, 1988.
Presented to the CIM, Sep. 1987, New Brunswick, N.J., "Developments of New Sulfide and Precious Metal Collectors" by Nagaraj et al.

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