FIELD: hydrometallurgy. SUBSTANCE: metal-containing hard-reducible sulfide ore is divided into two portions. The first one is subjected to partial sulfide-assimilating microorganism-mediated biological digestion in biooxidation reactor, in which microorganism has been acclimatized. Partially digested ore is then combined with second portion. Resulting material is then dehydrated, biologically oxidized, and subjected to biological leaching. EFFECT: increased economical efficiency of process. 27 cl, 1 dwg
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