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基于CO_2在高温条件下的反应特性,建立了CO_2用于脱磷炉冶炼的物料和能量分析模型,验证CO_2用于脱磷炉冶炼过程参与氧化反应的可行性.在此基础上,基于某厂脱磷炉的实际冶炼工况,研究喷吹CO_2对脱磷转炉温度、煤气等的影响.研究发现:当废钢比为8%和CO_2利用率为85%时,CO_2的喷吹比例可控制在28%以内,氧耗可降低16%,炉气中CO比例可提高约12%;同时随着CO_2利用率的提高,脱磷炉的半钢温度逐渐降低,氧耗逐渐降低.
Based on the reaction characteristics of CO_2 under high temperature conditions, the material and energy analysis model of CO_2 for smelting in dephosphorization furnace was established and the feasibility of CO_2 for oxidation reaction in smelting process of dephosphorization furnace was verified. On this basis, The actual smelting condition of dephosphorization furnace was studied and the effects of CO_2 injection on dephosphorization converter temperature and gas were studied.The results show that when the ratio of scrap to steel is 8% and the CO 2 utilization is 85%, the injection rate of CO 2 can be controlled at Within 28%, the oxygen consumption can be reduced by 16% and the CO ratio in the furnace gas can be increased by about 12%. Meanwhile, with the increase of CO 2 utilization efficiency, the temperature of the semi-steel in the dephosphorization furnace gradually decreases and the oxygen consumption gradually decreases.