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OwnerKonstantin I. Ushakov, Mikhail E. Khilko +4inventors
InventorsKonstantin I. Ushakov, Mikhail E. Khilko, Rina I. Felman, Vasily I. Sadykov, Evgeny I. Kalnin, Pavel A. Kovgan
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The present invention relates to the field of non-ferrous metallurgy and more specifically to methods for treating sulfide raw materials. The method comprises an autogenous smelting of the raw materials with flux additions in a blast furnace, where a quartz layer 0.3 to 1.5 m high is provided immediately above the tuyeres of the furnace. The smelting process is conducted with oxygen-enriched air blowing with an oxygen consumption of 300 to 400 m.sup.3 /tonne of sulfide material. The smelting method produces matte suitable for subsequent converting, elemental sulfur, and off-gases containing 8 to 25% SO.sub.2. The method can be applied for copper and copper-nickel production.
Method of treating non-ferrous sulfide raw materials in a blast furnace, which comprises autogenously smelting in a blast furnace provided with tuyeres a charge consisting of non-ferrous sulfide raw material and fluxes by blowing therein oxygen-containing gas, providing a quartz layer 0.3 to 1.5 m high immediately above the tuyeres so as to provide a sufficiently complete oxidation of iron sulfide by the oxygen contained in the oxygen-enriched blow with an oxygen consumption of 300 to 400 m.sup.3 /tonne of sulfide material, thereby producing matte, slag, elemental sulfur and sulfur-containing gases.
Dependencies are inferred from the claim text.