钒在FeO-SiO₂-MnO渣系与铁液间的分配行为

来源期刊：钢铁2011年第7期

论文作者：董进明 赵飞 张延玲 仇圣桃 干勇

文章页码：14 - 20

关键词：钒； FeO-SiO₂-MnO； 渣系； 分配行为

Key words：vanadium； FeO-SiO₂-MnO； slag system； distribution behavior

摘    要：在实验室条件下,系统研究了1380℃下,钒在FeO-SiO₂-MnO渣系与铁液间的分配行为。结果表明:钒的提取率、钒在渣-金两相的分配比、渣的钒容量随渣中SiO₂的质量分数升高而降低。在SiO₂的质量分数较低时,以上参数随MnO质量分数的增加而升高。而在SiO₂的质量分数较高(>20%)时,随MnO质量分数的增加呈现先升高后降低的趋势。FeO-SiO₂-MnO三元渣系中,SiO₂的质量分数为10%~20%、MnO的质量分数为13%~5%时,以上参数达到最大值,且该区域对应着FeO-SiO₂-MnO渣系熔点最低的区域。V₂O₃在FeO-SiO₂-MnO渣系中活度系数的数量级为10-6~10-7。

Abstract: Under laboratory conditions,the distribution behavior of vanadium between hot metal and slag system of FeO-SiO₂-MnO slag at 1 380℃ was studied.The results show:the extraction rate of vanadium from the hot metal,the distribution ratio of vanadium between slag and metal phases,and vanadium capacity of slag decrease with increasing SiO₂ content;the parameters mentioned above increase with increasing MnO content in the condition of keeping SiO2 content at lower level,when the SiO₂ content is larger than 20% they firstly increase and then decrease with increasing MnO content;in the slag system of FeO-SiO₂-MnO,they reach the maximum value in the region of keeping w(SiO₂) at 10%-20% and w(MnO) at 13%-25%,which is corresponding to the region of giving the lowest melting point;the magnitude of the activity coefficient of V₂O₃ in FeO-SiO₂-MnO slag system is 10-6-10-7.