| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: procedure for extraction of gold from gold containing copper ore consists in cyanic sodium (NaCN) cyanic leaching with circulating solutions, in filtration and sorption of gold from solutions. Also, leaching is performed with circulating solutions upon sorption without additional replenishment with NaCN with addition of 5-10 g/l of ammonium carbonate into solutions. Circulating solutions are replenished with NaCN to concentration not less, than 0.5 g/l before sorption. ^ EFFECT: reduced consumption of cyanide and production of qualitative commodity product. ^ 2 cl, 2 dwg, 1 tbl, 1 ex |
