FIELD: non-ferrous metallurgy. SUBSTANCE: clinker is melted with the help of oxygen blast, blast being fed on layer of clinker, ratio of oxygen blast to clinker's carbon is (2.0-3.4):1, ratio of oxygen to clinker's metallic iron is (0.12-0.33):1. Carbon dioxide may be used as oxidation blast, its ratio to clinker's metallic iron being (0.6-1.4):1. EFFECT: increases recovery of copper, zinc, and nobble metals, decreases transition of sulfur into gaseous phase. 2 cl, 1 tbl
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