还原剂品位对钒铁冶炼渣中钒损及合金成分的影响

Effect of Aluminum Purity on Vanadium Loss in Slag and Alloy Composition of Ferrovanadium Smelting Process

分析了低品位工业纯铝还原制备钒铁合金的过程影响因素,考察了不同品位还原剂的主要成分及其对不同牌号钒铁合金制备过程渣中钒损及合金成分的影响。研究结果表明:工业纯铝品位的降低对不同牌号钒铁合金渣中钒含量影响不大,当还原剂纯度分别为99.8%、99.5%和99.0%时,Fe V50三期渣中TV含量范围分别为0.35%~0.37%,0.67%~0.71%,1.15%~1.20%,Fe V80三期渣中TV含量范围分别为0.20%~0.25%,0.55%~0.59%,0.99%~1.07%;合金C、Si、P、Mn含量随还原剂品位的降低而升高,当工业纯铝品位从99.8%降低至99.0%时,Fe V50和Fe V80合金A级品率分别从100%和95%降低至80%和60%。

Influence factors of low grade industrial aluminum for ferrovanadium preparation by aluminothermic reduction process were analyzed.Main components of different grades of reducing agent and its effects on vanadium loss and composition of alloy with different grades were investigated. The analysis shows that the reduction of industrial aluminum purity has little effect on the TV content in slag during the preparation of different grades of ferrovanadium.The content range of TV in three stages slag is 0.35% ~ 0.37%,0.67% ~0.71%,1.15% ~ 1.20% for Fe V50 smelting and 0.20% ~ 0.25%,0.55% ~ 0.59%,0.99% ~ 1.07% for Fe V80 smelting,when the purity of reducing agent is 99.8%,99.5% and 99%,respectively.The content of C,Si,P and Mn in alloy increases with decrease of the reducing agent grade.When the purity of industrial aluminum decreases from 99.8% to 99%,A-grade rate of Fe V50 and Fe V80 alloy decreases from 100% and 95% to95% and 60%,respectively.