Improving LD Gas Recovery on Converter Smelting with Vanadium Titanium Molten Iron

Systematic analysis of various influence factors on converter gas recovery under the special processes of smelting vanadium-containing molten iron was carried out in this paper. Through industrial experiments,the condition of operation and control level of the relevant processes were optimized,including adjustment for the height of moving petticoat pipe,micro pressure control of the converter mouth,improvement of the feeding for blowing process in steelmaking,optimization of slagging and oxygen lance operation,and modification of limit value for gas recovery. The gas recovery in steelmaking process was efficiently improved,with 119.87m³/ t of recovery ratio and 5578.655 kJ/m³ of heat value under semisteel steelmaking.