METHOD AND APPARATUS FOR CARBOTHERMAL REDUCTION OF ALUMINIUM OXIDES IN HIGH-TEMPERATURE BLAST FURNACE

摘要

FIELD: metallurgy. SUBSTANCE: blast furnace is charged from above with alumina and lump solid carbon-containing fuel. From below, heated oxygen-rich air with added steam, gas fuel and/or mazut, and carbon dust fuel is blown in above level of liquid smelting products. A part of blast with additives is blown in into metal fusion through low-set jets. Here also a part of charge materials are loaded by means of loading unit for on-line correction of heat state of furnace and chemical composition of smelting products. EFFECT: enhanced efficiency of process. 2 cl, 1 dwg, 2 tbl