BURDEN FOR SMELTING VANADIUM IRON Russian patent published in 1999 - IPC

FIELD: metallurgy, in particular, production of vanadium iron in blast furnaces; may be used in production of ferrovanadium. SUBSTANCE: burden includes, wt. %: vanadium-containing slag with basicity 4.0-5.26, 2-10; damper vanadium sinter with basicity of 0.7-2.2, 1-10; pellets, 30-70; sinter, the balance. In addition, burden may include wastes of ferroalloy production in the amount of 0.3-1.0%. Relationship of consumption of vanadium-containing slag charged into furnace to consumption of damper vanadium sinter is expressed in the form of equation Sl=300-(1.3-1.6)D, where Sl is amount of charged slag, kg/t of pig iron; D is amount of charged damper vanadium sinter, kg/t of pig iron. EFFECT: increased content of vanadium in pig iron, complete recovery of vanadium through entire process of ferrovanadium production, improved technical-and-economic indices of blast-furnace heat. 6 cl