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Behavior Analysis of CaF2 in Magnesia Carbothermic Reduction Process in Vacuum

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Abstract

Magnesium production by carbothermic reduction of magnesia with CaF2 in vacuum was investigated experimentally by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and thermodynamic analysis. Thermodynamic calculations indicate that magnesium was generated by a carbothermic reduction among MgO-C system, which should be above 1500 K (1227 °C) (50 Pa). According to the carbothermic reduction analysis, the CaF2 does not participate in the carbothermic process. The experimental results demonstrated that the mass loss increased along with increasing CaF2. The percentage was up to 92 pct with 5 pct CaF2.The reduction degree increased with CaF2 more than it without CaF2 obviously. Considering the reduction degree and economic benefit, 5 pct CaF2 was the optimal choice. The purity of metal magnesium reached 95.59 wt pct, which has perfect crystallization and lamellar structure. CaF2 did not participate in magnesia carbothermic reduction in vacuum; instead, it played a catalytic role during the process.

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References

  1. R.E. Brown: Light Metal Age, 1996, vol. 8.

  2. W. Xian-Fei and X. Shou-Mei: Trans. Nonferrous Met. Soc. China, 2011, vol. 21, pp. 807–13.

    Article  Google Scholar 

  3. L.I. Rong-Ti, P. Wei, and M. Sano: Metall. Mater. Trans. B, 2003, vol. 8B, pp. 433–37.

    Article  Google Scholar 

  4. Z. Ding-Fei, Q. Fu-Gang, L. Wei, S. Guo-Liang, and Z. Xia-Bing: Trans. Nonferrous Met Soc. China, 2011, vol. 21, pp. 703–09.

    Article  Google Scholar 

  5. B.L. Mordike and T. Ebert: Mater. Sci. Eng. A, 2001, vol. 302, pp. 37–45.

    Article  Google Scholar 

  6. A. Froats: Light Metal, TMS-AIME, New York, NY, 1980, pp. 969–79.

    Google Scholar 

  7. S. Ramakrishnan and P. Koltun: Resour. Conservat. Recycl., 2004, vol. 42, pp. 49–64.

    Article  Google Scholar 

  8. L. Zhi-Hua, X. Huai-Sheng, and D. Yong-Nian: Energy for Metallurgical Industry, 2004, vol. 23, pp. 20–22.

    Google Scholar 

  9. R. Winand: Trans. Inst. Min. Metall. Sect. C: Miner. Process. Extract. Metall., 1990, vol. 99, pp.105–12.

    Google Scholar 

  10. D.J. Min, J.W. Han, and W.S. Chung: Metall. Mater. Trans. B, 1999, vol. 30B, pp. 215–21.

    Article  CAS  Google Scholar 

  11. L. Hong, K. Okumura, and M. Sano: Metall. Mater. Trans. B, 1999, vol. 30B, pp. 1003–08.

    Article  CAS  Google Scholar 

  12. Y.U. Qing-Chun, Y. Bin, X. Bao-Qiang, L. Da-Chun, L. Zhi-Hua, and D. Yong-Nian: Proc. 9 th Vacuum Metallurgy and Surface Engineering Conference, Shenyang, China, 2009, pp. 428–33.

  13. L. Zhi-Hua, D. Yong-Nian, and X. Huai-Sheng: Youse Jinshu, 2005, vol. 57, no. 1, pp. 56–59.

    Google Scholar 

  14. G. Brooks, S. Trang, and P. Witt: JOM, 2006, vol. 58, no. 5, pp. 51–55.

    Article  CAS  Google Scholar 

  15. M.W. Chase: NIST-JANAF Thermochemical Tables[M],4th ed., American Chemical Society and the American Institute of Physics for the National Institute of Standards and Technology, New York, NY, 1998, pp. 98–143.

    Google Scholar 

  16. I. Brain, M. Cheng, Nai-Liang, N. Si-Tong, and X. Gui-Ying: Thermochemical Data of Pure Substances, 3rd ed., Science Press, Beijing, China, 2003.

  17. X. Ri-Yao: Magnesium Production Process, Central South University Press, Changsha, China, 2003, pp. 12–15.

    Google Scholar 

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Acknowledgment

This work was supported financially by the Science Research Foundation of Education Department of Yunnan Province, China (No. 2010C257)

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Authors and Affiliations

  1. National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, P.R. China

    Yang Tian (Phd Graduate), Tao Qu (Lecturer), Bin Yang (Professor), Yong-Nian Dai (Academician), Bao-Qiang Xu (Lecturer) & Sen Geng (Undergraduate)

  2. Key Laboratory of Nonferrous Metals Vacuum Metallurgy of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, P.R. China

    Yang Tian (Phd Graduate), Tao Qu (Lecturer), Bin Yang (Professor), Yong-Nian Dai (Academician), Bao-Qiang Xu (Lecturer) & Sen Geng (Undergraduate)

  3. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, P.R. China

    Yang Tian (Phd Graduate), Tao Qu (Lecturer), Bin Yang (Professor), Yong-Nian Dai (Academician), Bao-Qiang Xu (Lecturer) & Sen Geng (Undergraduate)

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  1. Yang Tian
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  2. Tao Qu
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  3. Bin Yang
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Corresponding author

Correspondence to Tao Qu.

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Manuscript submitted September 21, 2011.

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Tian, Y., Qu, T., Yang, B. et al. Behavior Analysis of CaF2 in Magnesia Carbothermic Reduction Process in Vacuum. Metall Mater Trans B 43, 657–661 (2012). https://doi.org/10.1007/s11663-011-9622-2

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  • DOI: https://doi.org/10.1007/s11663-011-9622-2

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