Sodium sulfide leach process

Details Sodium sulfide leach process Sodium sulfide leach process

1976-03-01

1977-09-27

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 27, 423 87, 423511, C01G 700, C01G 5700

Patent

active

040512207

ABSTRACT:
A process is disclosed for treating mixed metal sulfides containing trivalent antimony sulfide wherein the sulfide concentrates are leached with an excess of sodium sulfide in order to isolate copper sulfide and other insolubles in solid form while solubilizing the remaining metal sulfides and producing sodium thioantimonite, separating the insoluble sulfides from the solution; oxidizing the sodium thioantimonite with elemental sulfur to produce sodium thioantimonate in solution; crystallizing a portion of the sodium thioantimonate along with other available metal sulfides from solution; and recirculating the remainder of the solution to the sodium sulfide leach stage. The crystallized metal sulfides may be further treated, isolated, and recovered as desired.

REFERENCES:
patent: 278816 (1883-06-01), Parsons
patent: 702153 (1902-06-01), Van der Ploeg
patent: 3682589 (1972-08-01), Moore
patent: 3911078 (1975-10-01), Nadkarni
Remy, Treatise on Inorganic Chemistry, vol. I, Elsevier Pub. Co., N. Y., 1956, pp. 659, 660.

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