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利用熔渣结构共存理论建立了CaO-SiO2-Al2O3-MgO-FeO渣系FeO活度的计算模型,并分析了1 400℃时炉渣碱度、MgO和FeO质量分数对该渣系FeO活度的影响规律。结果表明:当CaO-SiO2-Al2O3-MgO-FeO渣系三元碱度为1.3,Al2O3质量分数为12%,FeO质量分数为2%条件下,随MgO质量分数的增加,炉渣FeO活度增大;当二元碱度为1.1,Al2O3质量分数为12%,MgO质量分数为10%时,FeO活度随随渣中FeO质量分数的增加呈线性增加;当渣中Al2O3、MgO和FeO质量分数分别为12%、10%和2%固定不变时,随着二元碱度的提高,炉渣FeO活度迅速增加。计算得到的上述规律和实测规律一致,说明了本模型用于分析FeO活度的正确性。
Based on the coexistence theory of slag structure, the calculation model of FeO activity for CaO-SiO2-Al2O3-MgO-FeO slag was established. The effects of slag basicity, MgO and FeO mass fraction on the FeO activity Affect the law. The results show that when the basicity of CaO-SiO2-Al2O3-MgO-FeO slag system is 1.3, the content of Al2O3 is 12% and the content of FeO is 2%, with the increase of MgO content, the activity of FeO When the binary basicity is 1.1, Al2O3 is 12% and the mass fraction of MgO is 10%, the activity of FeO linearly increases with the increase of FeO content in the slag. When the mass fraction of Al2O3, MgO and FeO When the fractions were 12%, 10% and 2% respectively, the FeO activity of slag increased rapidly with the increase of binary alkalinity. The calculated above rule is consistent with the measured rule, which shows that this model is used to analyze the correctness of FeO activity.