东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (5): 685-688.DOI: -

• 论著 • 上一篇    下一篇

钒钛磁铁矿固态还原的研究

都兴红;解斌;娄太平;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家重大基础研究发展计划项目(2007CB613503)

Research on solid reduction of vanadium-titanium magnetite

Du, Xing-Hong (1); Xie, Bin (1); Lou, Tai-Ping (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Du, X.-H.
  • About author:-
  • Supported by:
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摘要： 研究了钒钛磁铁矿的固态还原过程及影响因素,讨论了磨矿粒度、还原温度和配碳量对固态还原金属化率及还原后炉料中钛走向的影响.采用煤基直接还原工艺流程,能够将钒钛磁铁矿中铁的氧化物还原为金属铁,然后通过磁选,可实现钛、铁的有效分离.实验结果表明,最佳工艺条件为:还原温度1 100℃,配碳量为1∶1,磨矿粒度控制在75~150μm之间.在此工艺条件下得到铁的金属化率和渣中钛的质量分数分别在80%和36%以上.该工艺为我国大批量钒钛磁铁矿的开发利用提供了新途径.

关键词: 钒钛磁铁矿, 固态还原, 磁选, 富集, 金属化率

Abstract: The solid-phase reduction behavior and the influence of technological parameters of vanadic titanomagnetite were studied. The influence of technological parameters including grinding grain, reaction temperature and carbon rate on the degree of metallization and the magnetic separation of titanium was discussed. The results showed that using coal-based direct reaction reduction, the ferric oxide in vanadic titanomgnetite can be reduced to Fe, and then Ti can be separated from Fe by magnetic separation. The best reduction conditions are the temperature of 1100°C, the carbon rate of 1:1 and the grinding particle size of 75~150 μm. The metallizations and TiO2 content of slag phase can be achieved over 80% and 36%. The technology provides a new way for our country's large number of vanadium titanium magnetite ore exploitation.

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