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为了研究钒在攀钢转炉中的热力学行为及分配,根据钒渣的成分对CaO-MgO-Al2O3-V2O3-SiO2熔渣中各组元的活度进行研究.应用分子相互作用体积模型(MIVM)及其伪多元法预测MgO-Al2O3-SiO2、CaO-V2O3-SiO2、CaO-MgO-Al2O3-SiO2渣系中某组元的活度值,并与试验值对比.结果表明,MIVM伪多元法预测值与试验值吻合良好,MgO-Al2O3-SiO2渣系中Al2O3的平均相对误差为15%;CaO-V2O3-SiO2渣系中V2O3的平均相对误差为33%;CaO-MgO-Al2O3-SiO2渣系中SiO2的平均相对误差为13%.在此基础上,利用MIVM预测CaO-MgO-Al2O3-V2O3-SiO2熔渣中各组元的活度,并将V2O3的预测值与试验值对比分析,结果表明,预测值与试验值吻合良好,都呈正偏差,平均相对误差为44%,V2O3的活度随碱度的提高而下降.

参考文献

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