东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (5): 655-659.DOI: 10.12068/j.issn.1005-3026.2015.05.011

• 材料与冶金 • 上一篇    下一篇

烧结矿中MgO对钒钛矿综合炉料软熔滴落的影响

柳政根， 储满生， 陈立杰， 付小佼   

  1. (东北大学 材料与冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2014-03-26 修回日期:2014-03-26 出版日期:2015-05-15 发布日期:2014-11-07
  • 通讯作者: 柳政根
  • 作者简介:柳政根(1983-)，男，江西宜春人，东北大学博士研究生； 储满生(1973-)，男，安徽岳西人，东北大学教授，博士生导师.
  • 基金资助:
    国家高技术研究发展计划项目(2012AA062302，2012AA062304)； 中央高校基本科研业务费专项资金资助项目(N110202001).

Effects of MgO Content in Sinter on Softening-Dripping Behavior of Vanadium-Titanium Magnetite Composite Burdens

LIU Zheng-gen， CHU Man-sheng， CHEN Li-jie， FU Xiao-jiao   

  1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2014-03-26 Revised:2014-03-26 Online:2015-05-15 Published:2014-11-07
  • Contact: CHU Man-sheng
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摘要： 以钒钛磁铁矿炼铁原料为基础，系统研究了烧结矿中MgO质量分数对高炉冶炼钒钛磁铁矿综合炉料软熔滴落性能和V，Cr在渣铁中迁移规律的影响，并进行了理论分析.研究表明，随着烧结矿中MgO质量分数的提高，综合炉料的软化区间t○40-t○4变宽；熔化区间t○D-t○S稍有收窄，软熔带变薄且位置略微下移；熔滴性能总特征值S先减小后增大，综合炉料透气性先变好后恶化，在MgO质量分数为2.98%~3.40%时透气性最好；滴落率逐渐变小；V， Cr在滴落铁中的收得率略有降低；因此，烧结矿中MgO质量分数在3.40%左右为宜，此时高炉渣中MgO质量分数约为12%.

关键词: 高炉冶炼, 钒钛磁铁矿, MgO, 软熔滴落性能, V, Cr还原

Abstract: Effects of MgO content in sinter on softening-dripping behavior of vanadium-titanium magnetite composite burden and the migration patterns of V， Cr in slag-iron were studied. The results showed that with the increasing of MgO in sinter， the softening range t40-t4 tends to be wider，the melting range tD-tS is narrowed slightly. The cohesive zone tends to be narrow and its location is shifted down but not obvious. Softening-dripping characteristics S decreases at first then increases， the permeability tends to be better then worse， when the content of MgO is between 2.98% and 3.40%， the permeability is the best. The dripping ratio tends to be declining; when MgO is increased， it is not conducive to the reduction of V， Cr. The optimal content of MgO in the sinter is around 3.40% and the content of MgO in BF slag is about 12%.

Key words: BF smelting, vanadium-titanium magnetite, MgO, softening-dripping behavior, the reduction of V, Cr

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