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Combustion-Alumino-Magnesiothermic Reduction of TiO2 to Produce a Ti-Rich Ingot

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Abstract

Titanium metal preparation from titanium dioxide (TiO2) has been the subject of numerous studies to overcome the chlorination processes at the heart of the Kroll process. In this study, an alumino-magnesiothermic reduction approach is employed to obtain a Ti-rich ingot via the combustion of an exothermic mixture of TiO2–KClO4–Al(Mg)-KClO4–CaF2 composition in argon. The combustion temperatures are measured, and the reaction patches are highlighted. The synthesis conditions of the Ti-rich ingot were carefully examined depending on the Al particle size, Al/Mg ratio, TiO2 precursor type, and CaF2 concentration. XRD analysis states that the ingot obtained under optimized experimental conditions is single-phase Ti metal. ICP-MS analysis revealed residual Al and O in the Ti ingot with 3.5 and 4.0 wt pct content, respectively.

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Acknowledgments

This work was supported by the Industrial Strategic Technology Development Program (20010585, High Purity Metal Refining Technology for Titanium Metal with Zero Toxic Gas Emission) funded by the Ministry of Trade, Industry and Energy (MOTIE, Korea).

Conflict of interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Authors and Affiliations

  1. Graduate School of Materials Science & Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Taejon, 34134, Republic of Korea

    Jong Hyeon Lee, Kyu-Seok Lim, Wan-Bae Kim & Woo-Seok Choi

  2. RASOM, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Taejon, 34134, Republic of Korea

    Jong Hyeon Lee, Hayk Nersisyan & Thanh-Nam Huynh

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  1. Jong Hyeon Lee
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  2. Hayk Nersisyan
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  4. Kyu-Seok Lim
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Correspondence to Jong Hyeon Lee.

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Lee, J.H., Nersisyan, H., Huynh, TN. et al. Combustion-Alumino-Magnesiothermic Reduction of TiO2 to Produce a Ti-Rich Ingot. Metall Mater Trans B 53, 3147–3158 (2022). https://doi.org/10.1007/s11663-022-02594-3

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