| abstract |
FIELD: metallurgy. ^ SUBSTANCE: method of ores preparation for leaching includes disintegration and/or ore sintering, bacterial oxidation of ore by means of treatment by sulfuric solution, containing components, activating bacteria growth, with introduction of colonies of bacteria strains, oxidising iron, copper and sulfur in ore. Before bacterial oxidation it is implemented preliminary treatment of ore oxidising sulfide minerals with usage of oxidising solution, received as a result of sulfuric solution barbotage by air, irradiated by ultraviolet rays in the wave range, providing ozone generation, and electrolysis of solution and/or pulp in electro-chemical reactor. Additionally colonies of bacteria strains during bacterial oxidation are introduced on sludges of sulfide minerals in sulfuric solution. ^ EFFECT: increase of effectiveness and rate of leaching process and extraction increasing of gold. ^ 1 ex |