BRIQUETTE FOR PRODUCTION OF PIG IRON AND STEEL Russian patent published in 1997 - IPC

FIELD: metallurgy, particular, preparation of charge material for melting of pig iron and steel. SUBSTANCE: the offered briquette has steel scale, carbon-containing material and binding agent. It contains carbon-containing material in form of electrode scrape, and binding agent in form of mixture of silicon dioxide, calcium oxide, sodium oxide and aluminum oxide with the following amounts of components, mas.%: electrode scrap 10-30; mixture of the oxides 1-10; the balance, steel scale. Binding agent includes, mas. %: aluminum oxide 3-18; sodium oxide 13-27; calcium oxide 14-25; the balance, silicon dioxide. EFFECT: provision of production of briquettes possessing high strength and improved quality of pig iron and steel. 3 tbl