FIELD: non-ferrous metallurgy, procession of complex metallurgical raw material in liquid bath. SUBSTANCE: method comprises steps of loading raw material and carbonaceous reducing agent into liquid slag bath, blowing bath by oxygen-containing gas; supplying air higher than level of bath for providing such quantity of waste gases that allows to receive content of carbon monoxide in gases being fed for scrubbing in range (0.5-5)% and content of free oxygen no more than 0.5%. EFFECT: enhanced efficiency of method. 1 cl, 1 tbl
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