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Volume 26 Issue 7
Jul.  2019
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文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(7): 822-830
Jun-wei Chen, Yang Jiao,  and Xi-dong Wang, Thermodynamic studies on gas-based reduction of vanadium titano-magnetite pellets, Int. J. Miner. Metall. Mater., 26(2019), No. 7, pp. 822-830. https://doi.org/10.1007/s12613-019-1795-8
Cite this article as:
Jun-wei Chen, Yang Jiao,  and Xi-dong Wang, Thermodynamic studies on gas-based reduction of vanadium titano-magnetite pellets, Int. J. Miner. Metall. Mater., 26(2019), No. 7, pp. 822-830. https://doi.org/10.1007/s12613-019-1795-8
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研究论文

Thermodynamic studies on gas-based reduction of vanadium titano-magnetite pellets

  • Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China

  • 通讯作者:

    Xi-dong Wang    E-mail: xidong@pku.edu.cn

  • Numerous studies have focused on the reduction thermodynamics of ordinary iron ore; by contrast, the literature contains few thermodynamic studies on the gas-based reduction of vanadium titano-magnetite (VTM) in mixed atmospheres of H2, CO, H2O, CO2, and N2. In this paper, thermodynamic studies on the reduction of oxidized VTM pellets were systematically conducted in an atmosphere of a C-H-O system as a reducing agent. The results indicate that VTM of an equivalent valence state is more difficult to reduce than ordinary iron ore. A reduction equilibrium diagram using the C-H-O system as a reducing agent was obtained; it clearly describes the reduction process. Experiments were performed to investigate the effects of the reduction temperature, the gas composition, and two types of iron ores on the reduction of oxidized VTM pellets. The results show that the final reduction degree increases with increasing reduction temperature, increasing molar ratio of H2/(H2 + CO), and decreasing H2O, CO2, and N2 contents. In addition, the reduction processes under various conditions are discussed. All of the results of the reduction experiments are consistent with those of theoretical thermodynamic analysis. This study is expected to provide valuable thermodynamic theory on the industrial applications of VTM.
    • Research Article

    Thermodynamic studies on gas-based reduction of vanadium titano-magnetite pellets

    + Author Affiliations
      Abstract
    • Numerous studies have focused on the reduction thermodynamics of ordinary iron ore; by contrast, the literature contains few thermodynamic studies on the gas-based reduction of vanadium titano-magnetite (VTM) in mixed atmospheres of H2, CO, H2O, CO2, and N2. In this paper, thermodynamic studies on the reduction of oxidized VTM pellets were systematically conducted in an atmosphere of a C-H-O system as a reducing agent. The results indicate that VTM of an equivalent valence state is more difficult to reduce than ordinary iron ore. A reduction equilibrium diagram using the C-H-O system as a reducing agent was obtained; it clearly describes the reduction process. Experiments were performed to investigate the effects of the reduction temperature, the gas composition, and two types of iron ores on the reduction of oxidized VTM pellets. The results show that the final reduction degree increases with increasing reduction temperature, increasing molar ratio of H2/(H2 + CO), and decreasing H2O, CO2, and N2 contents. In addition, the reduction processes under various conditions are discussed. All of the results of the reduction experiments are consistent with those of theoretical thermodynamic analysis. This study is expected to provide valuable thermodynamic theory on the industrial applications of VTM.
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    • [1]
      A.M. Alfantazi and R.R. Moskalyk, Processing of indium:a review, Miner. Eng., 16(2003), No. 8, p.687.
      [2]
      S.Y. Chen and M.S. Chu, Metalizing reduction and magnetic separation of vanadium titano-magnetite based on hot briquetting, Int. J. Miner. Metall. Mater., 21(2014), No. 3, p. 225.
      [3]
      T. Hu, X.W. Lv, C.G. Bai, Z.G. Lun, and G.B. Qiu, Reduction behavior of panzhihua titanomagnetite concentrates with coal, Metall. Mater. Trans. B, 44(2013), No. 2, p. 252.
      [4]
      L.H. Zhou and F.H. Zeng, Reduction mechanisms of vanadium-titanomagnetite-non-coking coal mixed pellet, Ironmaking Steelmaking, 38(2014), No. 1, p. 59.
      [5]
      R.J. Longbottom, O. Ostrovski, J.Q. Zhang, and D. Young, Stability of cementite formed from hematite and titanomagnetite ore, Metall. Mater. Trans. B, 38(2007), No. 2, p. 175.
      [6]
      Y.L. Sui, Y.F. Guo, T. Jiang, X.L. Xie, S. Wang, and F.Q. Zheng, Gas-based reduction of vanadium titano-magnetite concentrate:Behavior and mechanisms, Int. J. Miner. Metall. Mater., 24(2017), No. 1, p. 10.
      [7]
      J. Dang, X.J. Hu, G.H. Zhang, X.M. Hou, X.B. Yang, and K. Chou, Kinetics of reduction of titano-magnetite powder by H2, High Temp. Mater. Processes, 32(2013), No. 3, p. 229.
      [8]
      J. Tang, M. Chu, C. Feng, Y. Tang, and Z. Liu, Coupled effect of valuable components in high-chromium vanadium-bearing titanomagnetite during oxidization roasting, ISIJ Int., 56(2016), No. 8, p. 1342.
      [9]
      S.Y. Chen and M.S. Chu, Metalizing reduction and magnetic separation of vanadium titano-magnetite based on hot briquetting, Int. J. Miner. Metall. Mater., 21(2014), No. 3, p. 225.
      [10]
      Y.L. Sui, Y.F. Guo, T. Jiang, and G.Z. Qiu, Reduction kinetics of oxidized vanadium titano-magnetite pellets using carbon monoxide and hydrogen, J. Alloys Compd., 706(2017), p. 546.
      [11]
      H.Y. Sun, A.A. Adetoro, F. Pan, Z. Wang, and Q.S. Zhu, Effects of high-temperature preoxidation on the titanomagnetite ore structure and reduction behaviors in fluidized bed, Metall. Mater. Trans. B, 48(2017), No. 3, p. 1898.
      [12]
      O.N. Salmon, R.E. Fayling, G.E. Gurr, and V.W. Halling, Thermodynamics of post-erasure signal effect in γ-Fe2O3 magnetic recording tapes, IEEE Trans. Magn., 15(1979), No. 5, p. 1315.
      [13]
      M.E. Gálvez, P.G. Loutzenhiser, I. Hischier, and A. Steinfeld, CO2 splitting via two-step solar thermochemical cycles with Zn/ZnO and FeO/Fe3O4 redox reactions:Thermodynamic analysis, Energy Fuels, 22(2008), No. 5, p.3544.
      [14]
      T. Katsura, M. Wakihara, S.I. Hara, and T. Sugihara, Some thermodynamic properties in spinel solid solutions with the Fe3O4 component, J. Solid State Chem., 13(1975), No. 1-2, p. 107.
      [15]
      H. Sun, X. Dong, X. She, Q. Xue, and J. Wang, Solid state reduction of titanomagnetite concentrate by graphite, ISIJ Int., 53(2013), No. 4, p. 564.
      [16]
      E. Park and O. Ostrovski, Reduction of titania-ferrous ore by carbon monoxide, ISIJ Int., 43(2003), No. 9, p. 1316.
      [17]
      W. Yu, Q.Y. Tang, J.A. Chen, and T.C. Sun, Thermodynamic analysis of the carbothermic reduction of a high-phosphorus oolitic iron ore by FactSage, Int. J. Miner. Metall. Mater., 23(2016), No. 10, p. 1126.
      [18]
      R.B. Wanty and M.B. Goldhaber, Thermodynamics and kinetics of reactions involving vanadium in natural systems:Accumulation of vanadium in sedimentary rocks, Geochim. Cosmochim. Acta, 56(1992), No. 4, p. 1471.
      [19]
      Y.J. Gu, J.B. Cao, J.Q. Wu, and L.Q. Chen, Thermodynamics of strained vanadium dioxide single crystals, J. Appl. Phys., 108(2010), No. 8, art. No. 083517.
      [20]
      G.H. Emmons and W.S. Williams, Thermodynamics of order-disorder transformations in vanadium carbide, J. Mater. Sci., 18(1983), No. 9, p. 2589.
      [21]
      O. Delaire, M. Kresch, J.A. Muñoz, M.S. Lucas, J.Y.Y. Lin, and B. Fultz, Electron-phonon interactions and high-temperature thermodynamics of vanadium and its alloys, Phys. Rev. B, 77(2008), art. No. 214112.
      [22]
      R.H. Sievwright, J.J. Wilkinson, H.S.C. O'Neill, and A.J. Berry, Thermodynamic controls on element partitioning between titanomagnetite and andesitic-dacitic silicate melts, Contrib. Mineral. Petrol., 172(2017), p. 62.
      [23]
      R.O. Sack and M.S. Ghiorso, An internally consistent model for the thermodynamic properties of Fe-Mg-titanomagnetitealuminate spinels, Contrib. Mineral. Petrol., 106(1991), No. 4, p. 474.
      [24]
      R. Aragón and R.H. Mccallister, Phase and point defect equilibria in the titanomagnetite solid solution, Phys. Chem. Miner., 8(1982), No. 3, p. 112.
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