通过对攀钢转炉渣及合成渣的熔化温度、粘度和矿物结构的研究表明,V_2O_5可显著降低炉渣的熔化温度和粘度,钒在渣中与CaO形成低熔点的钒酸钙.因此可以认为,V_2O_5对炉渣起着稀释剂作用,但这种稀释作用是以消耗自由CaO为代价的,这便是在攀钢转炉吹炼过程中要加大量石灰造高碱度渣脱硫的原因.在碱性渣中钒以多价形式存在,首先以5价态与CaO生成钒酸钙,随着碱度降低到1.5和V_2O_5增加到20％时,渣中还同时出现3价态的钒尖晶石. Through the study of melting temperature, viscosity and mineral structure of converter slag and synthetic slag in Panzhihua Iron and Steel Co., Ltd., V2O5 can significantly reduce the melting temperature and viscosity of slag and vanadium forms calcium vanadate with low melting point in slag with CaO.Therefore, V2O5 plays a role as a diluent on the slag, but this dilution effect is based on the consumption of free CaO, which is why it is necessary to increase the amount of lime to make high basicity desulfurization during the blowing process in Panzhihua Iron and Steel Co., Vanadium in the slag exists in a polyvalent form. First, calcium vanadate is generated from the pentavalent state and CaO. As the alkalinity decreases to 1.5 and V2O5 increases to 20%, vanadium spinel also appears in the slag.