Metallurgical and Materials Transactions B

, Volume 50, Issue 1, pp 242–250 | Cite as

Equilibrium of [Si]/(SiO2) in Carbothermic Selective Reduction of Titanium Concentrate Ore for the Preparation of Titanium Oxycarbide

  • Jiusan Xiao
  • Qi Wang
  • Bo Jiang
  • Hongmin ZhuEmail author


Carbothermic selective reduction of titanium concentrate ore for the preparation of titanium oxycarbide was presented and SiO2 was found to be partly reduced during the process. The equilibrium relationship between Si dissolved in metallic Fe and SiO2 existed in corresponding slag was analyzed thermodynamically, and then revealed by a series of designed equilibration experiments. The results are in accordance with the calculated values obtained from thermodynamic analysis and have well explained the phenomenon that part of SiO2 is reduced during selective reduction processing of titanium concentrate ore.



This work was supported by the National High Technology Research and Development Program of China (863 Program, No. 2012AA062302).


  1. 1.
    W.J. Kroll: Trans.Electrochem. Soc., 1940, vol. 78, pp. 35-47.CrossRefGoogle Scholar
  2. 2.
    G.Z. Chen, D.J. Fray, T.W. Farthing: Nature, 2000, vol. 407, pp. 361-364.CrossRefGoogle Scholar
  3. 3.
    K. Ono, R.O. Suzuki: JOM, 2002, vol. 54, pp. 59-61.CrossRefGoogle Scholar
  4. 4.
    R.O. Suzuki: J. Phys. Chem. Sol., 2005, vol. 66, pp. 461-465.CrossRefGoogle Scholar
  5. 5.
    D.R. Sadoway: JOM, 1991, vol. 43, pp. 15-19.CrossRefGoogle Scholar
  6. 6.
    S. Jiao, H. Zhu: J. Mater. Res., 2006, vol. 21, pp. 2172-2175.CrossRefGoogle Scholar
  7. 7.
    S. Jiao, H. Zhu: J. Alloys Compd., 2007, vol. 438, pp. 243-246.CrossRefGoogle Scholar
  8. 8.
    C. Gao, B. Jiang, Z. Cao, K. Huang, H. Zhu: Rare Metals, 2010, vol. 29, pp. 547-551.CrossRefGoogle Scholar
  9. 9.
    D.G. Jones: Trans. Inst. Min. Metall., 1973, vol. 82, pp. C186-192.Google Scholar
  10. 10.
    M. Kamal-Hussein, S.Z. El-Tawil: Indian J. of Tech., 1967, vol. 5, pp. 97-100.Google Scholar
  11. 11.
    I.E. Grey, A.F. Reid: Trans. Inst. Min. Metall., 1974, vol. 83, pp. 39-46.Google Scholar
  12. 12.
    S.K. Gupta, V. Rajakumar, P. Grieveson: Metall. Trans. B, 1987, vol. 18B, pp. 713-718.CrossRefGoogle Scholar
  13. 13.
    K Sun, R. Takahashi, J Yagi: ISIJ Int., 1993, vol. 33, pp. 523-528.CrossRefGoogle Scholar
  14. 14.
    Y. Chen, T. Hwang, M. Marsh, J.S. Williams: Metall. Mater. Trans. A, 1997, vol. 28B, pp. 1115-1121.CrossRefGoogle Scholar
  15. 15.
    M.A.R. Dewan, G. Zhang, O. Ostrovski: ISIJ Int., 2010, vol. 50, pp. 647-653.CrossRefGoogle Scholar
  16. 16.
    K.S. Coley, B.S. Terry, P. Grieveson: Metall. Mater. Trans. B, 1995, vol. 26B, pp. 485-494.CrossRefGoogle Scholar
  17. 17.
    M.A.R. Dewan, G. Zhang, O. Ostrovski: Metall. Mater. Trans. B, 2010, vol. 41B, pp. 182-192.CrossRefGoogle Scholar
  18. 18.
    M.A.R. Dewan, G. Zhang and O. Ostrovski: Mineral Processing & Extractive Metall. Imm Trans., 2010, vol. 120, pp. 111-117.CrossRefGoogle Scholar
  19. 19.
    B. Jiang, J. Xiao, K. Huang, J. Hou, S. Jiao, H. Zhu: J. Am. Ceram. Soc., 2017, vol.100, pp.2253-2265.CrossRefGoogle Scholar
  20. 20.
    J. Xiao, B. Jiang, K. Huang, S. Jiao, H. Zhu: 7th Int. Symp. High Temp. Metall. Process. 2016.Google Scholar
  21. 21.
    E.C. DeWys, W.R. Foster: J. Am. Ceram. Soc., 1956, vol. 39, pp. 372-376.CrossRefGoogle Scholar
  22. 22.
    S.A. Rezan, G. Zhang, O. Ostrovski: Metall. Mater. Trans. B, 2012, vol. 43B, pp. 73-81.CrossRefGoogle Scholar
  23. 23.
    B. Jiang, K. Huang, Z. Cao, H. Zhu: Metall. Mater. Trans. A, 2012, vol. 43A, pp. 3510-3514.CrossRefGoogle Scholar
  24. 24.
    B. Jiang, N.Hou, S. Huang, G. Zhou, J. Hou, Z. Cao, H. Zhu: J. Solid State Chem., 2013, vol. 204, pp. 1–8.CrossRefGoogle Scholar
  25. 25.
    R.J. Fruehan: Metall. Trans., 1970, vol. 4, pp. 865-870.Google Scholar
  26. 26.
    C.W. Bale, P. Chartrand, S. Decterov, G. Eriksson, K. Hack, R.B. Mahfoud, J. Melancon, A.D. Pelton, S. Petersen: Calphad, 2002, vol. 26, pp. 189-228.CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijingChina
  2. 2.Department of Materials Science and EngineeringNorwegian University of Science and TechnologyTrondheimNorway
  3. 3.Tohoku UniversitySendaiJapan

Personalised recommendations