METHOD OF PRODUCTION OF WASH SINTER Russian patent published in 2000 - IPC

FIELD: ferrous metallurgy, particularly, preparation of stock for blast-furnace smelting in form of sinter applicable in wash of walls and hearths of blast furnaces. SUBSTANCE: burden iron-containing components are used in form of iron are concentrates with iron content in excess of 63% and sintered ore, and fluxes in form of dolomitic limestone, limestone and/or lime in amount ensuring relation MgO/CaO ≥ 0.2 with basicity of CaO/≤ 0.7. Charged into lower layer is 25-30% of total burned weight with fuel in it amounting to 2.0-2.7%. Fuel in burden upper layer amounts up to 5.8-6.4 wt.% of upper layer weight. In this case, total content of iron in obtained sinter exceeds 60%, and ferrous iron content is not less than 20%. EFFECT: higher efficiency. 2 cl, 1 tbl