FIELD: metallurgy, antimony metallurgy. SUBSTANCE: mixture consisting of antimony-containing material, fluxes, precipitator, reducer and circulating materials, is melted to produce black antimony, sublimates, dump slag and matte. Matte is processed by blowing in melt. In this case, introduced into melt are calcium or calcium and sodium fluxes in the amount ensuring ratio in return slag of Fe:Na:CaO=1:(0.04-0.6):(0.1-0.8), with Fe+Na+CaO equalling not less than 50% of the total amount of slag. Return slag formed during blowing is returned to melt mixture. EFFECT: higher quality of black antimony due to reduced content in it of iron, and reduced content of antimony in dump slag. 1 tbl
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