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Rare Metal Technology 2017 pp 167–175Cite as

A New Two-Stage Aluminothermic Reduction Process for Preparation of Ti/Ti-Al Alloys

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Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

This work presents a two-stage aluminothermic reduction process for preparing Ti and Ti-Al alloys using Na2TiF6. Al-Ti master alloy and pure cryolite as co-products could be obtained. After the first stage reduction, O content of the metal production (particle size of less than 74 μm) was below about 0.35 wt%. Ti (IV), Ti (III) and Ti (0) existed in the Ti-containing cryolite, and the content was about 3 to ~10 wt%. After secondary reduction, Ti content of the clean cryolite was reduced to 0.002 wt%. The Al-Ti master alloy obtained by secondary reduction was composed of Al and TiAl3. A cyclical production process is founded by Al-Ti master alloy returned to the next first and secondary reduction process as reductant, in which Ti and Al are almost 100% recyclable.

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Authors and Affiliations

  1. School of Metallurgy, Northeastern University, Shenyang, 110819, People’s Republic of China

    Kun Zhao & Naixiang Feng

Authors
  1. Kun Zhao
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  2. Naixiang Feng
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Corresponding author

Correspondence to Naixiang Feng .

Editor information

Editors and Affiliations

  1. Pennsylvania State University , University Park, Pennsylvania, USA

    Hojong Kim

  2. The University of Saskatchewan , Saskatoon, Saskatchewan, Canada

    Shafiq Alam

  3. IND LLC , South Jordan, Utah, USA

    Neale R. Neelameggham

  4. Umicore , Olen, Belgium

    Harald Oosterhof

  5. MIT , Cambridge, Massachusetts, USA

    Takanari Ouchi

  6. WATERTOWN, Massachusetts, USA

    Xiaofei Guan

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© 2017 The Minerals, Metals & Materials Society

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Zhao, K., Feng, N. (2017). A New Two-Stage Aluminothermic Reduction Process for Preparation of Ti/Ti-Al Alloys. In: Kim, H., Alam, S., Neelameggham, N., Oosterhof, H., Ouchi, T., Guan, X. (eds) Rare Metal Technology 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51085-9_17

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