| 摘要 |
The invention relates to the field of non-ferrous metallurgy, in particular, to hydrometallurgical processing of concentrates. A method for gold recovery comprises metal leaching with alkali cyanide solutions, which contain 0.3% KCN, 0.6% KOH prepared using water activated under the action of the contact nonequilibrium low-temperature plasma containing 100-300 mg/l of peroxide and superoxide compounds in the presence of a complexing agent, followed with separation of the gold-containing solution and solid residue. Before leaching the ore concentrate is subjected to the mechanical activation by the wet method for 30-270 minutes using water as a basic medium, which water is activated under the action of the contact nonequilibrium low-temperature plasma containing 200-500 mg/l of peroxide and superoxide compounds and pH = 9-11. As a result of the use of this method increases the level of gold recovery. |
