FIELD: hydro-metallurgy of noble metals; bio-hydro-metallurgical extraction of noble metals from sulfide gold-bearing concentrates.
SUBSTANCE: proposed method includes grinding, flotation and bacterial leaching-out of sulfide concentrate and cyaniding of bacterial leaching-out products. Bacterial leaching-out is carried out with the use of gas-and-air mixture preheated to temperature of 40°C which is fed to reactor where it is subjected to bubbling through concentrate mixture and bacterial solution at temperature of solution of 18-25°C.
EFFECT: reduced time for technological process due to increased rate of oxidation of sulfides at bacterial leaching-out.
4 ex
| Title | Year | Author | Number |
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