FIELD: metallurgy.
SUBSTANCE: method of processing of the feed stock containing the precious metals and sulfides includes feed stock missing with water or sulphuric acid solution, and mixture treatment in autoclave with oxygen supply. In this process, the extraction of precious metals takes place in two stages. In the first stage, the oxidation of the starting material is carried out, the sorbent is introduced into the second stage into the mixture directed to autoclave processing of the raw material. Then the sorbent, saturated with precious metals, is separated from the pulp and extracted valuable components.
EFFECT: reducing the residence time of the sorbent during processing of raw materials in an autoclave.
5 cl, 1 dwg, 5 tbl, 4 ex
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