CaO-SiO_2-V_2O_3三元系活度模型及其应用  

Activity Model and Its Application in CaO-SiO_2-V_2O_3 Ternary System

作　　者：周勇[1] 李正邦[1] 郭培民[1] 

机构地区：[1]钢铁研究总院冶金工艺研究所,北京100081

出　　处：《钢铁研究学报》2007年第6期30-33,共4页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(50374033);国家高技术研究发展计划(863)项目(2003AA33X030)

摘　　要：根据熔渣结构的分子离子共存理论建立了CaO-SiO2-V2O3三元系活度模型,应用该模型对用钒氧化物矿代替钒铁直接合金化冶炼高速钢的工艺过程进行了热力学计算和分析。结果表明:在高温下,SiC比Si、C的还原性能强。SiC和Si与V2O3反应时渣钢间V的分配比随碱度的提高而下降,而C与V2O3反应时渣钢间V的分配比随碱度变化不大。Si和C与V2O3反应时渣钢间V的分配比随Si、C含量的提高而下降。The activity model of CaO-SiO2-V2O3 ternary system was built according to the coexistence theory of slag structure, and the thermodynamics of the process of high speed steel produced by direct alloying of vanadium oxidized ore was analyzed by this model. The results show that the reducing capability of SiC is the strongest among SiC, C and Si. The distribution ratio of V between slag and metal decreases with the increase of basicity when SiC and Si react with V2O3, while the distribution ratio of V varies lightly with the increase of basicity when C reacts with V2O3. The distribution ratio of V between slag and metal decreases with the increase of Si and C content when Si and C react with V2O3.

关 键 词：活度模型 直接合金化 热力学 

分 类 号：TF704.2[冶金工程—钢铁冶金]