Froth flotation

Details Froth flotation Froth flotation

1988-10-04

1990-02-27

Lacey, David L.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, B03D 102, B03D 106

Patent

active

049043749

ABSTRACT:
A method of selectively recovering an arsenopyrite, pyrrhotite or like mineral from a material containing such a mineral and pyrite which includes the steps of providing a slurry of the material, adding a dialkyl (C.sub.3-8)-dithiophosphate to the slurry, passing a gas through the slurry to cause the mineral to be carried to the surface of the slurry and report in a first float concentrate, removing this concentrate from the slurry, activating the mineral remaining in the slurry by adding a suitable water-soluble copper salt to the slurry, adding a monoalkyl (C.sub.3-10)-dithiocarbamate to the slurry, passing a gas through the slurry to cause mineral to be carried to the surface of the slurry and form a second float concentrate, removing the second concentrate from the slurry and combining the first and the second float concentrates.

REFERENCES:
patent: 1955978 (1934-04-01), Ruth
patent: 2007176 (1935-07-01), Brinker
patent: 2342277 (1944-02-01), Herkenhoff
patent: 3925218 (1975-12-01), Zipperian
patent: 4684459 (1987-08-01), Klimpel
patent: 4702822 (1987-10-01), Klimpel

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