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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。
Under laboratory conditions, the distribution behavior of vanadium between FeO-SiO2-MnO slag system and molten iron was studied systematically at 1380 ℃. The results show that the extraction rate of vanadium, the distribution ratio of vanadium in the slag - gold two phases, and the vanadium content of the slag decrease with the increase of the mass fraction of SiO2 in the slag. When the mass fraction of SiO2 is low, the above parameters increase with the increase of MnO mass fraction. When the content of SiO2 is higher (> 20%), the content of SiO2 increases first and then decreases with the increase of MnO mass fraction. FeO-SiO2-MnO ternary slag system, the mass fraction of SiO2 is 10% to 20%, MnO mass fraction of 13% to 5%, the above parameters reach the maximum, and the region corresponds to the FeO-SiO2-MnO Slag system has the lowest melting point. The activity coefficient of V2O3 in the FeO-SiO2-MnO slag system is on the order of 10-6 ~ 10-7.