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Preparation of titanium powders by calciothermic reduction of titanium dioxide

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Abstract

To develop an effective process for titanium powders production, a calciothermic reduction process of pigment titanium dioxide (w(TiO2)>98%), based on the preform reduction process (PRP), was investigated by means of XRD, SEM and EDS. In this process, the mixture of TiO2 powder and CaCl2 was pressed into pieces as feed preform and was reduced by calcium vapor. Titanium powders was recovered after leaching from the reduced preform with hydrochloric acid and deionized water. The results indicate when the mass ratio of CaCl2 to TiO2 is about 1:4 and at a constant temperature of 1 273 K for 6 h in vacuum furnace, titanium powders with 99.55% purity by EDS analysis and irregular shape (8–15 μm in particle size) are obtained.

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Authors and Affiliations

  1. National Engineering Laboratory for Vacuum Metallurgy (Kunming University of Science and Technology), Kunming, 650093, China

    He-li Wan  (万贺利), Bao-qiang Xu  (徐宝强), Yong-nian Dai  (戴永年), Bin Yang  (杨斌), Da-chun Liu  (刘大春) & Wei Sen  (森维)

  2. State Key Laboratory of Breeding Base of Complex Nonferrous Metal Resources Clear Utilization in Yunnan Province (Kunming University of Science and Technology), Kunming, 650093, China

    He-li Wan  (万贺利), Bao-qiang Xu  (徐宝强), Yong-nian Dai  (戴永年), Bin Yang  (杨斌), Da-chun Liu  (刘大春) & Wei Sen  (森维)

  3. Key Laboratory for Nonferrous Metals Vacuum Metallurgy of Yunnan Province (Kunming University of Science and Technology), Kunming, 650093, China

    He-li Wan  (万贺利), Bao-qiang Xu  (徐宝强), Yong-nian Dai  (戴永年), Bin Yang  (杨斌) & Da-chun Liu  (刘大春)

  4. Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China

    He-li Wan  (万贺利), Bao-qiang Xu  (徐宝强), Yong-nian Dai  (戴永年), Bin Yang  (杨斌) & Da-chun Liu  (刘大春)

Authors
  1. He-li Wan  (万贺利)
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  2. Bao-qiang Xu  (徐宝强)
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  3. Yong-nian Dai  (戴永年)
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  4. Bin Yang  (杨斌)
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  5. Da-chun Liu  (刘大春)
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  6. Wei Sen  (森维)
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Corresponding author

Correspondence to Bao-qiang Xu  (徐宝强).

Additional information

Foundation item: Project(51004058) supported by the National Natural Science Foundation of China; Project(2011FB039) supported by the Natural Science Foundation of Yunnan Province, China

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Wan, Hl., Xu, Bq., Dai, Yn. et al. Preparation of titanium powders by calciothermic reduction of titanium dioxide. J. Cent. South Univ. 19, 2434–2439 (2012). https://doi.org/10.1007/s11771-012-1293-x

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  • DOI: https://doi.org/10.1007/s11771-012-1293-x

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