OXYGEN CONVERTER STEEL SMELTING METHOD Russian patent published in 1995 - IPC

FIELD: ferrous metallurgy, steel smelting in steel-smelting aggregates with usage of lump carbon-bearing materials. SUBSTANCE: method provides for metal scrap charging, introduction of carbon-bearing heat carriers return charge of graphitization furnaces, slag forming, pouring of molten pig-iron and blowing of metal by oxygen. Dust of electrical filters of electrolysis production is used as slag thinner. Heat carrier and thinner are charged in the form of briquets after pig-iron pouring in following ratio of ingredients, mass graphitization furnaces return charge 65 90; dust of electrical filters of aluminum electrolysis production 10 35. EFFECT: increased productivity. 1 tbl