摘要
为解决钒铁合金制备成本高和有价金属收得率低等问题,提出以铝灰作还原剂直接还原富钒渣制备钒铁合金的新思路,研究了不同还原条件对铝灰还原富钒渣过程中有价金属收得率的影响。结果表明,还原温度由1773 K升高至1873 K,Fe收得率由51.8%增加至95.6%;Mn收得率由16.7%增加至84.2%;Cr收得率由2.5%增加至87.9%;V收得率由0.5%增加至91.8%。二元碱度由1.0升高至1.5,Fe、Cr、Mn、V的收得率分别由72.5%、51.7%、35.8%、11.4%增加至95.6%、84.2%、87.9%、91.8%。最佳还原条件下(温度1873 K,二元碱度1.5,还原时间30 min)制备的钒铁合金中Fe和V的金属品位分别为28.18%和35.01%,合金产品中V/Fe的质量比为1.24。
In order to solve the problems of low valuable metal yield and high production cost in the process of ferrovanadium production,this paper proposed the use of aluminum ash as a reductant to directly reduce the vanadium-rich slag for the preparation of ferrovanadium alloys.The effect of different reduction conditions on the yield of valuable metal in the process of aluminum-ash reduction of vanadium-riched slag was studied.The results show that with the reduction temperature increasing from1773 K to 1873 K,the yield of Fe increases from 51.8%to 95.6%,the yield of Mn increases from16.7%to 84.2%,the yield of Cr increased from 2.5%to 87.9%,the yield of V increased from 0.5%to91.8%.With the basicity increasing from 1.0 to 1.5,the yield of Fe,Cr,Mn and V increases from72.5%,51.7%,35.8%and 11.4%to 95.6%,84.2%,87.9%and 91.8%,respectively.Under the optimal reduction conditions(the temperature of 1873 K,the basicity of 1.5,the reduction time of 30 min),the metal grades of Fe and V in the prepared vanadium ferroalloy are 28.18%and 35.01%,respectively,and the mass ratio of V/Fe in the alloy product is 1.24.
作者
杨志飞
陈敏
张灵犀
Yang Zhifei;Chen Min*;Zhang Lingxi(School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China)
出处
《钢铁钒钛》
CAS
北大核心
2024年第2期13-19,共7页
Iron Steel Vanadium Titanium
基金
国家自然科学基金项目(52174301,51974080)。
关键词
钒铁合金
富钒渣
铝灰
还原
收得率
ferrovanadium alloy
vanadium-enriched slag
aluminum dross
reduction
recovery rate
