COMPOSITION OF BURDEN TO PRODUCE PELLETS FOR THEIR METALLIZATION IN PLANTS OF SHAFT TYPE AND SUBSEQUENT HOT BRIQUETTING OF IRON Russian patent published in 2003 - IPC

FIELD: preparation of burden to produce metallurgical starting material-pellets intended for process of direct winning of iron. SUBSTANCE: burden for production of pellets includes iron ore concentrate, bauxite, limestone and concrete stone in following proportion, per cent by mass: bauxite 0.4-1.1; sum of limestone and concrete stone 0.5-1.0; iron ore concentrate being the balance. Technical result of invention consists in production of pellets with optimal properties ( high reducibility and strength in process of reduction ), optimal degree of deformation of metallized product which ensure normal preparation of material, on the one hand, and efficient hot briquetting of metallized product, on the other hand. EFFECT: effective preparation of burden. 1 tbl