Flotation separation of arsenopyrite from pyrite

Details Flotation separation of arsenopyrite from pyrite Flotation separation of arsenopyrite from pyrite

B - Operations, Transporting

03

D

B03D 1/06 (2006.01) B03D 1/002 (2006.01) B03D 1/02 (2006.01)

Patent

CA 2099572

2099572 9310904 PCTABS00022 Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3- ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings rich in arsenopyrite.

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