FIELD: nonferrous metallurgy, chemical industry; applicable in complex processing of pyrite cinders produced in process of sulfuric acid production from pyrite concentrates. SUBSTANCE: method includes heating of cinder and its smelting in presence of reducing agent and mixtures of fluxes composed of CaO and Al2O3-containing materials in ratio of (0.5-1.0):1.0 and taken in amount of 40-100 wt.% of cinder; treatment of produced iron-base alloy with solid oxidizers containing calcium sulfate and taken in amount of 50 wt.% of alloy. EFFECT: provided wasteless processing of pyrite cinders. 2 cl, 5 ex
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