FIELD: metallurgy. SUBSTANCE: method of oxidizing treatment of molten matte and simultaneous direct melting of sulfide concentrate is carried out in lined reactor with liquid bath, for instance, in converter to which oxidizing gas is introduced under surface of liquid bath. For additional supply of energy to achieve heat balance or to increase power, sulfide concentrate is introduced into gas phase of reactor with liquid bath together with oxygen gas or gas enriched with oxygen by means of burner for concentrate. EFFECT: provision of direct melting of sulfide concentrate with reduced power consumption. 8 cl, 1 dwg
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