FIELD: metallurgy.
SUBSTANCE: method includes leaching by solution of mixture of hydrosulphite and sodium thiosulfate and ammonium, sorption of complex thiosulfate-gold on heavy-basic anionite and separation of heavy-basic anionite. Additionally sorption is implemented after 2-10 hours after leaching. Then it is implemented elution of complex thiosulfate-gold by solution of polythionates of organic and norganic bases allowing concentration 0.2-10%. From received gold-containing eluate it is extracted gold by decomposition reaction or by electrochemical method. Additionally decomposition reaction is implemented by metals such as magnesium, zinc or iron, or by sulphides. Then it is implemented recovery of heavy-basic anionite by solution of mixture of sulfite and sodium sulfide and ammonium. After recovery of heavy-basic anionite it is directed to sorption of thiosulfate-gold.
EFFECT: acceleration of leaching, increasing of yield of gold and reduction of consumption of leaching agent.
4 cl, 3 ex
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