FIELD: metallurgy.
SUBSTANCE: method of sulphide stock containing noble metals comprises mixing stock with water solution of reagents and autoclave oxidising treatment by water solution of reagents on feeding oxygen and adding component with halogenide-ion to produce pulp. Then, pulp is divided into solution and solid residue. Note here that autoclave oxidising treatment is carried out by water solution containing component with halogenide-ion at 160-250°C and oxygen partial pressure of 0.5-5.0 MPa. Extraction of noble metals is carried out by leaching from solid residue by sulfite-sulfate solutions.
EFFECT: reduced number of processes, lower costs.
11 cl, 3 tbl, 1 ex
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Authors
Dates
2012-04-10—Published
2010-06-16—Filed