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Volume 25 Issue 2
Feb.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(2): 131-144
Yi-min Zhang, Li-na Wang, De-sheng Chen, Wei-jing Wang, Ya-hui Liu, Hong-xin Zhao,  and Tao Qi, A method for recovery of iron, titanium, and vanadium from vanadium-bearing titanomagnetite, Int. J. Miner. Metall. Mater., 25(2018), No. 2, pp. 131-144. https://doi.org/10.1007/s12613-018-1556-0
Cite this article as:
Yi-min Zhang, Li-na Wang, De-sheng Chen, Wei-jing Wang, Ya-hui Liu, Hong-xin Zhao,  and Tao Qi, A method for recovery of iron, titanium, and vanadium from vanadium-bearing titanomagnetite, Int. J. Miner. Metall. Mater., 25(2018), No. 2, pp. 131-144. https://doi.org/10.1007/s12613-018-1556-0
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研究论文

A method for recovery of iron, titanium, and vanadium from vanadium-bearing titanomagnetite

  • University of Chinese Academy of Sciences, Beijing 100049, China

  • National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China

  • Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

  • 通讯作者:

    Tao Qi    E-mail: tqgreen@home.ipe.ac.cn

  • An innovative method for recovering valuable elements from vanadium-bearing titanomagnetite is proposed. This method involves two procedures:low-temperature roasting of vanadium-bearing titanomagnetite and water leaching of roasting slag. During the roasting process, the reduction of iron oxides to metallic iron, the sodium oxidation of vanadium oxides to water-soluble sodium vanadate, and the smelting separation of metallic iron and slag were accomplished simultaneously. Optimal roasting conditions for iron/slag separation were achieved with a mixture thickness of 42.5 mm, a roasting temperature of 1200℃, a residence time of 2 h, a molar ratio of C/O of 1.7, and a sodium carbonate addition of 70wt%, as well as with the use of anthracite as a reductant. Under the optimal conditions, 93.67% iron from the raw ore was recovered in the form of iron nugget with 95.44% iron grade. After a water leaching process, 85.61% of the vanadium from the roasting slag was leached, confirming the sodium oxidation of most of the vanadium oxides to water-soluble sodium vanadate during the roasting process. The total recoveries of iron, vanadium, and titanium were 93.67%, 72.68%, and 99.72%, respectively.
    • Research Article

    A method for recovery of iron, titanium, and vanadium from vanadium-bearing titanomagnetite

    + Author Affiliations
      Abstract
    • An innovative method for recovering valuable elements from vanadium-bearing titanomagnetite is proposed. This method involves two procedures:low-temperature roasting of vanadium-bearing titanomagnetite and water leaching of roasting slag. During the roasting process, the reduction of iron oxides to metallic iron, the sodium oxidation of vanadium oxides to water-soluble sodium vanadate, and the smelting separation of metallic iron and slag were accomplished simultaneously. Optimal roasting conditions for iron/slag separation were achieved with a mixture thickness of 42.5 mm, a roasting temperature of 1200℃, a residence time of 2 h, a molar ratio of C/O of 1.7, and a sodium carbonate addition of 70wt%, as well as with the use of anthracite as a reductant. Under the optimal conditions, 93.67% iron from the raw ore was recovered in the form of iron nugget with 95.44% iron grade. After a water leaching process, 85.61% of the vanadium from the roasting slag was leached, confirming the sodium oxidation of most of the vanadium oxides to water-soluble sodium vanadate during the roasting process. The total recoveries of iron, vanadium, and titanium were 93.67%, 72.68%, and 99.72%, respectively.
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