Process for removing and recovering copper, silver and zinc from

Details Process for removing and recovering copper, silver and zinc from Process for removing and recovering copper, silver and zinc from

1997-01-17

1999-03-02

Gorgos, Kathryn

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Preparing single metal

205568, 205571, 205574, 205583, 205584, 205602, 205604, 205607, 423 24, 423 27, 423 29, 423 99, 423109, C25C 100, C25C 120, B01D 1100, C01G 900

Patent

active

058765883

ABSTRACT:
Ores containing copper, zinc, silver in the form of sulfides are treated by a solution of sulfurated sulfite ions and ammonium ions in order to remove most of the metals from the sulfide ores. This treatment renders the resulting gold bearing ores much more amenable to cyanide extraction. Dissolved metals are reclaimed by appropriate techniques, such as electrowinning or liquid-liquid extraction, and the solution of sulfurated sulfites and ammonia is recycled for further lixiviation of fresh ores.

REFERENCES:
patent: 4369061 (1983-01-01), Kerley, Jr.

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