以CaO-SiO2-FeO三元渣系为基，利用正规溶液模型计算了不同碱度、炉渣组分对于脱磷转炉内磷分配比和终点磷含量的影响规律；同时，采用Factsage软件计算了不同脱磷渣系的液相线温度，考察了添加不同炉渣组元对于渣系液相线温度的影响规律。综合理论计算结果，得到脱磷转炉适宜的成渣路线为铁质成渣路线，脱磷初渣成分为15％CaO-44％SiO2-41％FeO，中期渣成分为53％CaO-25．5％SiO2-21．5％FeO，后期固磷渣成分为63．6％CaO-30．3％SiO2-6．1％FeO。可为脱磷转炉的生产操作提供参考。
Based on CaO-SiO2-FeO ternary slag system,the effect of basicity and slag components on distribution ratio of phosphorous and end phosphorous content in pretreatment dephosphorization converter was calculated using regular solution model.Meanwhile,the liquidus temperature of slag was simulated by Factsage software to study the effect of slag compo-nents on liquidus temperature of slag.It could be concluded that ferrous slag-forming route was feasible for pretreatment de-phosphorization converter.The early slag composition was 15%CaO-44%SiO2-41%FeO,the medium slag composition was 53%CaO-25.5%SiO2-21.5%FeO,the later slag composition was 63.6%CaO-30.3%SiO2-6.1%FeO,which could be as references for operation of pretreatment dephosphorization converter.
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