CO2对脱磷转炉物料和能量的影响

基于CO2在高温条件下的反应特性,建立了CO2用于脱磷炉冶炼的物料和能量分析模型,验证CO2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CO2对脱磷转炉温度、煤气等的影响。研究发现：当废钢比为8%和CO2利用率为85%时,CO2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CO2利用率的提高,脱磷炉的半钢温度逐渐降低,氧耗逐渐降低。

Effect of CO2 on material and energy in dephosphorization converters

Based on the characteristics of CO2 at high temperature, material and energy models for CO2 using in a dephosphoriza-tion converter were established to verify the feasibility of CO2 for oxidation reactions. Based on practical working conditions in a facto-ry, the effects of CO2 on the converter temperature and gas were studied. It is discovered that the CO2 ratio can be controlled within 28%, the oxygen consumption can be reduced by 16%, and the CO ratio in the gas can be increased by about 12% when the scrap ratio is 8% and the utilization ratio of CO2 is 85%. Besides, as the utilization ratio of CO2 increases, the semi-steel temperature of the converter gradually decreases, and the oxygen consumption also lowers.