Metals recovery by flotation

Details Metals recovery by flotation Metals recovery by flotation

1989-09-18

1990-08-07

Lacey, David L.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, B03D 1008, B03D 101, B03D 1012

Patent

active

049465856

ABSTRACT:
Collector compositions for use in froth flotation processes for the beneficiation of gold and silver values from base metal sulfide ores are disclosed. The collector compositions comprise at least one mercaptobenzothiazole compound selected from compounds of the formula: ##STR1## wherein R is a C.sub.1 -C.sub.8 alkyl or a C.sub.2 -C.sub.8 alkoxy radical. The use of the substituted mercaptobenzothiazole collectors provides excellent metallurgical recoveries of gold and silver values in froth flotation processes conducted over a broad range of pH conditions including acid, neutral and mildly alkaline pH.

REFERENCES:
patent: 1652060 (1927-12-01), Smith
patent: 1716104 (1929-06-01), Bolton
patent: 1780000 (1930-10-01), Bolton
patent: 1788585 (1931-01-01), Ney
patent: 1847664 (1932-03-01), Ney
patent: 1852107 (1932-04-01), Christman
patent: 1858007 (1932-05-01), Falconer
patent: 1894344 (1933-01-01), Christman
patent: 2029156 (1936-01-01), Christman
patent: 4724072 (1988-02-01), Bornengo

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