FIELD: extraction of gold.
SUBSTANCE: proposed method includes separation fractions at size more than 22 from tailings whose yield increases 10% and content of gold reaches 70%. Fraction is ground and is returned for repeated leaching-out. Extraction of gold is performed by cyanidation of grainy graviconcentrate; consumption of cyanide is reduced by 4-5 times and content of gold extracted from graviconcentrate increases from 90.7-94.4% to 95.2-98.8%.
EFFECT: enhanced efficiency.
1 dwg, 2 tbl, 4 ex
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