FIELD: chemical industry. SUBSTANCE: method involves use of muriatic or sulfuric acid with addition of hypochlorite under following ratio: 0.1 of HCl + (0.02-0.1) of NaClO. Compound is prepared directly before its pumping into ore. Preliminary oxidation runs until iron rate in output solution reaches down to 600 mg per liter. EFFECT: increased gold extraction. 5 cl, 2 dwg
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