ABSTRACT

A thermodynamic calculation model of phosphorus distribution ratio between CaO–FeO–MgO–SiO₂–MnO–TiO₂–V₂O₅–P₂O₅ slags and molten metal has been developed based on the ion and molecule coexistence theory (IMCT). The calculated phosphorus distribution ratio shows a good agreement with the measured ones by the data of industrial trial, which proves the reliability of this model. Therefore, the model is used to study the effects of TiO₂, V₂O₅, slag basicity, FeO, MgO and MnO on phosphorus distribution. The results illustrate that the effects on phosphorus distribution from V₂O₅ and TiO₂ are non-negligible and they are almost the same, slag basicity and FeO have the most significant effects on phosphorus distribution, while MgO and MnO have the least.

摘要

基于离子和分子共存理论（IMCT）建立了CaO-FeO-MgO-SiO ₂ -MnO-TiO ₂ -V ₂ O ₅ -P ₂ O ₅炉渣和熔融金属之间磷分布比的热力学计算模型. 经工业试验数据计算得到的磷分配比与实测值吻合较好，证明了该模型的可靠性。因此，该模型用于研究TiO ₂、V ₂ O ₅、渣碱度、FeO、MgO和MnO对磷分布的影响。结果表明，V ₂ O对磷分布的影响₅和 TiO ₂不可忽略且几乎相同，渣碱度和 FeO 对磷分布的影响最显着，而 MgO 和 MnO 的影响最小。