The authors studied the dynamics of gas generation during the combustion of a blast furnace layer with air or oxygen-enriched air, with simultaneous smelting of oxidized nickel ore. It was found the higher the amount of heat required for smelting, the more complete is the combustion of carbon to The maximum smelting rate and decline of the level of ferric oxidation were achieved at a well def specific consumption of coke. Two groups of iron containing slags were studied. Slags containing FeO, with a fluidity of 10P at 1400-1450 deg C, permit production of high grade ferronickel without the accretions. Slags containing not less than 40percent CaO+MgO, with a basicity of>1.0, are recommended.
展开▼
