FIELD: noble metals, mining industry. SUBSTANCE: method involves grinding, gravitation-flotation concentration of ores and obtaining the product and sorption active flotoconcentrate followed by sorption bleaching the product and flotoconcentrate and obtaining the "tails" and saturated sorbent. Before sorption bleaching product is subjected for cyaniding and sorption bleaching is carried out for two stages. At the first stage bleaching the product is carried out and at the second stage - that of flotoconcentrate and "tails" from the first stage. Sorbent saturated at the second stage of sorption bleaching is saturated additionally with gold at the first stage. Invention ensures to increase sorbent capacity by 1.5-2-fold (by gold). Method can be used for gold extraction from ores containing sorptionally-active carbon, free gold and sulfides by "coal-in-pulp" procedure. EFFECT: improved method of gold extraction. 1 tbl
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Authors
Dates
1997-10-27—Published
1996-04-11—Filed