Distribution Behaviors of Vanadium between Hot Metal and FeO-SiO2-MnO(-TiO2) Slag System and Influential Factors
DONG Jin-ming ZHAO Fei ZHANG Yan-ling QIU Sheng-tao GAN Yong
National Eng. Research Center of Continuous Casting Technology, Central Iron and Steel Research Institute School of Metallurgical and Ecological Engineering, University of Science and Technology Beijin School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing National Eng. Research Center of Continuous Casting Technology, Central Iron and Steel Research Institute Central Iron&Steel Research Institute
Abstract：Distribution behavior of vanadium between hot metal and slag system of FeO-SiO2-MnO(-TiO2) was experimentally studied, together with the influential factors such as temperature, slag compositions, ratio of slag to hot metal, and initial [Si] or/and [Ti] content of hot metal. The results showed that in the ternary slag system of FeO-SiO2-MnO, the extraction rate of V from the hot metal, distribution ratio of V between slag and metal phases, and vanadium capacity of slag decreased with increasing of temperature, while the loss of C in hot metal caused by oxidizing reactions increased; the lower the ratio of slag to hot metal, the lower the extraction rate of V; while in the two cases of higher and lower ratio of slag to hot metal, the extraction rates of V reached their maximum values in the slag composition scope of MnO at 13%~25% and SiO2 at 12%~24%. In the quaternary slag system of FeO-SiO2-MnO-TiO2, with increasing of TiO2 content in slag, the extraction rate of V, distribution ratio of V between slag and metal, and vanadium capacity of slag decreased, while the activity coefficient of V2O3 in slag increased. Under laboratory conditions, the effects of influential factors on the extraction rate of V from hot metal decreased in the following order: final slag compositions > temperature > initial [Si] or/and [Ti] content.
董进明 赵飞 张延玲 仇圣桃 干勇. FeO-SiO2-MnO(-TiO2)渣系与铁液间钒的分配行为及影响因素[J]. , 2010, 10(6): 1076-1083.
DONG Jin-ming ZHAO Fei ZHANG Yan-ling QIU Sheng-tao GAN Yong. Distribution Behaviors of Vanadium between Hot Metal and FeO-SiO2-MnO(-TiO2) Slag System and Influential Factors. , 2010, 10(6): 1076-1083.
2010, Vol. 10 
