含氧化钛三元熔渣体系组元活度的预测  

Prediction of Component Activities in the Ternary Molten Slags Containing Titanium Oxide

作　　者：孙应 刘振楠 张凇源 刘聪 SUN Ying;LIU Zhennan;ZHANG Songyuan;LIU Cong(Science and Technology Department,Kunming Metallurgy College,Kunming 650033,China;Faculty of Metallurgy and Mining,Kunming Metallurgy College,Kunming 650033,China;Kunming Key Laboratory of Comprehensive Utilization Resources of Rare and Precious Metals,Kunming 650033,China)

机构地区：[1]昆明冶金高等专科学校科学技术处,云南昆明650033 [2]昆明冶金高等专科学校冶金与矿业学院,云南昆明650033 [3]昆明市稀散及贵金属资源综合利用重点实验室,云南昆明650033

出　　处：《昆明冶金高等专科学校学报》2023年第2期10-23,共14页Journal of Kunming Metallurgy College

基　　金：云南省教育厅科学研究基金资助项目:转炉提钒过程中钒的热力学行为研究(2022J1032);昆明冶金高等专科学校校级科研基金项目:钒钛磁铁矿高炉冶炼过程中Ti元素在渣-铁间的平衡分配研究(2021XJZK04)。

摘　　要：分别应用分子相互作用体积模型(MIVM)伪多元法和共存理论作用浓度模型对FeO-MnO-TiO_(2)、FeO-MnO-SiO_(2)、MnO-SiO_(2)-TiO_(2)以及FeO-SiO_(2)-TiO_(2)等渣系中组元FeO或MnO的活度进行了预测,对比实验值的误差显示:MIVM伪多元法预测值的总平均相对误差为16%,总平均标准偏差为0.062;共存理论预测值的总平均相对误差为28%,总平均标准偏差为0.077,MIVM伪多元法的预测效果相对共存理论较好,表明了MIVM伪多元法预测熔渣体系组元活度有较好的稳定性和可靠性。应用该模型预测了FeO-MnO-TiO_(2)、MnO-SiO_(2)-TiO_(2)以及FeO-SiO_(2)-TiO_(2)等渣系中组元TiO_(2)的活度,绘制其等活度曲线,并分析了不同渣系中组元TiO_(2)的热力学行为倾向。Based on the molecular interaction volume model(MIVM)and the coexistence theory model,the component activities were predicted in the ternary slags FeO-MnO-SiO_(2),FeO-MnO-TiO_(2),MnO-SiO_(2)-TiO_(2)and FeO-SiO_(2)-TiO_(2).In comparison with the experiment data,the total average relative error of the predicted value of pseudo-multicomponent approach of MIVM was 16%,and the total average standard deviation was 0.062.On the other hand,the total average relative error of the predicted value of coexistence theory model was 28%,and the total average standard deviation was 0.077.The prediction effect of the pseudo-multicomponent approach of MIVM has better stability and reliability than coexistence theory.The activities of component TiO_(2)were predicted in the ternary slags FeO-MnO-TiO_(2),MnO-SiO_(2)-TiO_(2)and FeO-SiO_(2)-TiO_(2)by MIVM,the isoactivity curve was determined,andthe thermodynamic behavior tendency of constituent TiO_(2)in different slag systems was analyzed.

关 键 词：氧化钛 熔渣 活度 预测 分子相互作用体积模型伪多元法 

分 类 号：TF01[冶金工程—冶金物理化学]