METHOD OF RECYCLING CYANIDES IN PRECIOUS METAL RECOVERY CIRCUIT

摘要

FIELD: precious metal metallurgy. SUBSTANCE: method of recycling hydrogen cyanide from cyanide-containing slime includes following steps: adjusting pH value of cyanide-containing slime, vaporizing hydrogen cyanide contained in the lime with preset pH, and bringing hydrogen cyanide in contact with slime containing precious metals to recover the latter. Hydrogen cyanide may also be brought in contact with recycle water or with decantation water to isolate cyanide and preserve resources. EFFECT: improved procedure. 14 clo