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Calciothermic reduction of titanium oxide in molten CaCl2

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Abstract

Titanium oxides were reduced to metallic titanium using the liquid calcium floating on the molten CaCl2. A part of Ca dissolved into CaCl2 and reacted with TiO2 settled below CaCl2. The by-product CaO also dissolved by about 20 mol pct into CaCl2, which was effective in reducing the oxygen concentration in the obtained Ti particles. The compositional region in the Ca-CaCl2-CaO system was examined for the less oxygen contamination in Ti and the better handling in leaching. A large amount of the residual calcium oxidized the titanium powder in leaching. The metallic Ti powder less than 1000 mass ppm oxygen could be obtained only for 3.6 ks using 5 to 7 mol pct Ca-CaCl2 at 1173 K. The powder was slightly sintered like sponge, and contained approximately 1500 ppm Ca. The anatase phae, the intermediate product in the refining process of TiO2, could be also supplied as raw material as well as rutile.

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References

  1. W. Kroll: Trans. Electrochem. Soc., 1940, vol. 78, pp. 35–47.

    Google Scholar 

  2. K. Ono and R.O. Suzuki: Mater. Jpn., 2002, vol. 41 (1), pp. 28–31.

    CAS  Google Scholar 

  3. O. Kubaschewski and W.A. Dench: J. Inst. Met., 1953, vol. 82, pp. 87–91.

    CAS  Google Scholar 

  4. K. Ono, T.H. Okabe, M. Ogawa, and R.O. Suzuki: Tetsu-to-Hagané, 1990, vol. 76 (4), pp. 568–75.

    CAS  Google Scholar 

  5. W. Kroll and Z. Anorg: Allgem. Chem., 1937, vol. 234, pp. 42–50.

    Article  CAS  Google Scholar 

  6. S. Miyazaki, T. Oishi, and K. Ono: Titanium, Science and Technology, Proc. 5th. Int. Conf. on Titanium, Munich, Germany, Sept. 10–14, 1984, G. Luetjering, U. Zwicker, and W. Bunk, eds., Deutsche Geselschaft fuer Metallk., Oberursel, Germany, 1985, pp. 2657–63.

    Google Scholar 

  7. K. Ono and S. Miyazaki: J. Jpn. Inst. Metall., 1985, vol. 49 (10), pp. 871–75.

    CAS  Google Scholar 

  8. R.O. Suzuki, M. Ogawa, T. Oishi, and K. Ono: Proc. 6th World Conf. on Titanium 1988, Cannes, France Soc. Franc. Metall., Paris, 1989, vol. II, pp. 701–06.

    Google Scholar 

  9. T.H. Okabe, R.O. Suzuki, T. Oishi, and K. Ono: Mater. Trans. JIM, 1991, vol. 32 (5), pp. 485–88.

    CAS  Google Scholar 

  10. H. Niiyama, Y. Tajima, F. Tsukihashi, and N. Sano: J. Less-Common Met., 1991, vol. 169, pp. 209–16.

    Article  CAS  Google Scholar 

  11. I. Obinata, Y. Takeuchi, and S. Saikawa: Trans. ASM, 1960, vol. 52, pp. 1072–83.

    CAS  Google Scholar 

  12. P.P. Alexander: U.S. Patent 2,038,402, 1936; U.S. Patent 2,043, 363, 1936; and U.S. Patent 2,082,134, 1937.

  13. B. Neumann, C. Kroeger, and H. Juettner: Z. Elektrochem., 1935, vol. 41 (10), pp. 725–36.

    CAS  Google Scholar 

  14. D.A. Wenz, I. Johnson, and R.D. Wolson: J. Chem. Eng. Data, 1969, vol. 14 (2), pp. 250–52.

    Article  CAS  Google Scholar 

  15. G.S. Perry and L.G. MacDonald: J. Nucl. Mater., 1985, vol. 130, pp. 234–41.

    Article  CAS  Google Scholar 

  16. T.H. Okabe, R.O. Suzuki, T. Oishi, and K. Ono: Tetsu-to-Hagané, 1991, vol. 77 (1), pp. 93–99.

    CAS  Google Scholar 

  17. T.H. Okabe, T. Oishi, and K. Ono: J. Alloys Compounds, 1992, vol. 184, pp. 43–56.

    Article  CAS  Google Scholar 

  18. T.H. Okabe, M. Nakamura, T. Ueki, T. Oishi, and K. Ono: Bull. Jpn. Inst. Met., 1992, vol. 31 (4), pp. 315–17.

    Google Scholar 

  19. S. Liu, R.O. Suzuki, and K. Ono: J. Alloys Compounds, 1998, vol. 266, pp. 247–54.

    Article  CAS  Google Scholar 

  20. R.O. Suzuki, M. Aizawa, and K. Ono: J. Alloys Compounds, 1999, vol. 288, pp. 173–82.

    Article  CAS  Google Scholar 

  21. T.H. Okabe, T.N. Deura, T. Oishi, K. Ono, and D.R. Sadoway: Metall. Mater. Trans. B, 1996, vol. 27B, pp. 841–47.

    Article  CAS  Google Scholar 

  22. T.H. Okabe, K. Hirota, Y. Waseda, and K.T. Jacob: Shigen-to-Sozai, 1998, vol. 114 (11), pp. 813–18.

    Article  CAS  Google Scholar 

  23. T.H. Okabe, K. Hirota, E. Kasai, F. Saito, Y. Waseda, and K.T. Jacob: J. Alloys Compounds, 1998, vol. 279, pp. 184–91.

    Article  CAS  Google Scholar 

  24. R.O. Suzuki, A. Saguchi, K. Asabe, T. Takahashi, T. Yagura, and K. Ono: Mater. Trans., 2001, vol. 42 (12), pp. 2492–98.

    Article  CAS  Google Scholar 

  25. K. Ono: Titanium Jpn., 2000, vol. 48 (1), pp. 13–15.

    Google Scholar 

  26. K. Ono and R.O. Suzuki: JOM Mem. J. Min. Met. Mater. Soc., 2002, vol. 54 (2), pp. 59–61.

    CAS  Google Scholar 

  27. K. Ono and R.O. Suzuki: Titanium Jpn., 2002, vol. 50 (2), pp. 105–8.

    CAS  Google Scholar 

  28. M.S. Coops, J.B. Knighton, and L.J. Mullins: ACS Symposium Series No. 216, Pulutonium Chemistry, W.T. Carnall and G.R. Choppin, eds., 1983, pp. 381–408.

  29. A. Roine: HSC Chemistry for Windows, ver. 4.1, Outokump Research Oy, Pori, Finland.

  30. V. Dosaj, C. Aksaranan, and D.R. Morris: J. Chem. Soc. Faraday Trans., 1975, vol. 71, pp. 1083–98.

    Article  CAS  Google Scholar 

  31. H. Fischbach: Steel Res., 1985, vol. 56 (7), pp. 365–68.

    CAS  Google Scholar 

  32. L.-I. Staffansson and D. Sichen: Scand. J. Metall., 1992, vol. 21, pp. 165–71.

    CAS  Google Scholar 

  33. K.M. Axler and G.L. DePoorter: Mater. Sci. Forum, 1991, vols. 73–75, pp. 19–24.

    Article  Google Scholar 

  34. Metals Databook, Japan Institue of Metals, 2nd ed., Maruzen, Tokyo, 1984, pp. 15 and 68.

  35. T.N. Deura, M. Wakino, T. Matsunaga, R.O. Suzuki, and K. Ono: Metall. Mater. Trans. B, 1998, vol. 29B, pp. 1167–74.

    Article  CAS  Google Scholar 

  36. R.O. Suzuki, T.N. Harada, T. Matsunaga, T.N. Deura, and K. Ono: Metall. Mater. Trans. B, 1999, vol. 30B, pp. 403–10.

    Article  CAS  Google Scholar 

  37. Y. Ochifuji, F. Tsukihashi, and N. Sano: Metall. Mater. Trans. B, 1995, vol. 26B, pp. 789–94.

    CAS  Google Scholar 

  38. Y. Tago, Y. Endo, K. Morita, F. Tsukihashi, and N. Sano: Iron Steel Inst. Jpn. Int., 1995, vol. 36 (2), pp. 127–31.

    Google Scholar 

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Author notes

  1. Shuichi Inoue (Graduate Student Master Course)

    Present address: the Department of Energy Science and Technology, Kyoto University, 606-8501, Kyoto, Japan

Authors and Affiliations

  1. the Department of Energy Science and Technology, Kyoto University, 606-8501, Kyoto, Japan

    Ryosuke O. Suzuki (Associate Professor)

  2. the Osaka Gas Company, 541-0046, Osaka, Japan

    Shuichi Inoue (Graduate Student Master Course)

Authors
  1. Ryosuke O. Suzuki
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  2. Shuichi Inoue
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Suzuki, R.O., Inoue, S. Calciothermic reduction of titanium oxide in molten CaCl2 . Metall Mater Trans B 34, 277–285 (2003). https://doi.org/10.1007/s11663-003-0073-2

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  • DOI: https://doi.org/10.1007/s11663-003-0073-2

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