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Volume 24 Issue 12
Dec.  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(12): 1341-1351
Swagat S. Rathand Danda Srinivas Rao, Dolochar as a reductant in the reduction roasting of iron ore slimes, Int. J. Miner. Metall. Mater., 24(2017), No. 12, pp. 1341-1351. https://doi.org/10.1007/s12613-017-1526-y
Cite this article as:
Swagat S. Rathand Danda Srinivas Rao, Dolochar as a reductant in the reduction roasting of iron ore slimes, Int. J. Miner. Metall. Mater., 24(2017), No. 12, pp. 1341-1351. https://doi.org/10.1007/s12613-017-1526-y
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研究论文

Dolochar as a reductant in the reduction roasting of iron ore slimes

  • Institute of Minerals and Materials Technology, Council of Scientific & Industrial Research, Bhubaneswar 751013, India

  • 通讯作者:

    Swagat S. Rath    E-mail: ssrath@immt.res.in

  • The present investigation examines the viability of dolochar, a sponge iron industry waste material, as a reductant in the reduction roasting of iron ore slimes, which are another waste generated by iron ore beneficiation plants. Under statistically determined optimum conditions, which include a temperature of 900℃, a reductant-to-feed mass ratio of 0.35, and a reduction time of 30-45 min, the roasted mass, after being subjected to low-intensity magnetic separation, yielded an iron ore concentrate of approximately 64wt% Fe at a mass recovery of approximately 71% from the feed iron ore slime assaying 56.2wt% Fe. X-ray diffraction analyses indicated that the magnetic products contain magnetite and hematite as the major phases, whereas the nonmagnetic fractions contain quartz and hematite.
    • Research Article

    Dolochar as a reductant in the reduction roasting of iron ore slimes

    + Author Affiliations
      Abstract
    • The present investigation examines the viability of dolochar, a sponge iron industry waste material, as a reductant in the reduction roasting of iron ore slimes, which are another waste generated by iron ore beneficiation plants. Under statistically determined optimum conditions, which include a temperature of 900℃, a reductant-to-feed mass ratio of 0.35, and a reduction time of 30-45 min, the roasted mass, after being subjected to low-intensity magnetic separation, yielded an iron ore concentrate of approximately 64wt% Fe at a mass recovery of approximately 71% from the feed iron ore slime assaying 56.2wt% Fe. X-ray diffraction analyses indicated that the magnetic products contain magnetite and hematite as the major phases, whereas the nonmagnetic fractions contain quartz and hematite.
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