• Volume 33 Issue 11
    Jul.  2021
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    CHEN De-sheng, SONG Bo, WANG Li-na, QI Tao, WANG Wei-jing. Direct reduction and enhanced reduction of vanadium-bearing titanomagnetite concentrates[J]. Chinese Journal of Engineering, 2011, 33(11): 1331-1336. doi: 10.13374/j.issn1001-053x.2011.11.016
    Citation: CHEN De-sheng, SONG Bo, WANG Li-na, QI Tao, WANG Wei-jing. Direct reduction and enhanced reduction of vanadium-bearing titanomagnetite concentrates[J]. Chinese Journal of Engineering, 2011, 33(11): 1331-1336. doi: 10.13374/j.issn1001-053x.2011.11.016

    Direct reduction and enhanced reduction of vanadium-bearing titanomagnetite concentrates

    doi: 10.13374/j.issn1001-053x.2011.11.016
    • Received Date: 2010-12-02
      Available Online: 2021-07-30
    • Vanadium-bearing titanomagnetite concentrates were reduced isothermally by adding pulverized coal and additives.Some factors which influence the metallization degree,such as reaction temperature,reaction time,C-to-Fe molar ratio and additives,were investigated.The enhanced reduction mechanism of additives was also discussed.The results show that reaction temperature,reaction time,C-to-Fe molar ratio and additives have great effect on the metallization degree.Under the condition of the reaction temperature of 1 200℃ and the reaction time of 120 min,the maximum metallization degree is 84.5% without any additive.Using Na2CO3 or CaF2 as an additive,the reduction of vanadium-bearing titanomagnetite concentrates can be promoted.With the addition of 3.0% Na2CO3 or CaF2,the metallization degree of vanadium-bearing titanomagnetite concentrates can reach up to 96.5% and 93.3% after the samples are heated at 1 200℃ for 120 min,respectively.

       

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