FIELD: non-ferrous metallurgy. SUBSTANCE: processing is carried out with the help of hydrometallurgical method. Method involves autoclave leaching, purifying thus prepared solutions against arsenic and ferrum by oxyhydrolysis, evaporation and crystallization of copper sulfate. Mentioned above autoclave leaching is carried out at 140-160 C and pressure 10-15 atm in sulfuric acid solution. The process is carried out in the medium of technical oxygen till residual acidity is 5-10 g/l, ratio liquid and solid phases being 4:1. EFFECT: improves efficiency of the method. 1 tbl
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