FIELD: reduction of precious metals from carboniferous ore. SUBSTANCE: method includes leaching of ore with solution of leaching agent and concentration of compounds of precious metal with leaching agent in solution on natural carboniferous component of ore for subsequent reduction. Absorbing volume of natural carboniferous component of ore may be supplemented by addition of recycled carboniferous substance or finely ground carbon to mixture of ore with leaching agent. After separation of carboniferous component of ore from barren rock. Barren rock material may be treated with the help of the processes of hot addition of carbon to leaching agent for further increase of reduction of precious metal. EFFECT: higher efficiency. 36 cl, 16 dwg, 3 tbl
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Authors
Dates
1998-04-10—Published
1993-09-10—Filed