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Novel metallurgical process for titanium production

Published online by Cambridge University Press:  03 March 2011

Shuqiang Jiao
Affiliation:
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, People’s Republic of China
Hongmin Zhu*
Affiliation:
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: hzhu@metall.ustb.edu.cn
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Abstract

In this work, a consumable anode composed of a solid solution of titanium carbide and titanium monoxide was prepared via carbothermic reduction of TiO2. Upon electrolysis, the anode fed Ti2+ into solution and carbon monoxide was generated; no excess carbon remained to contaminate the melt. On the cathode, high-purity titanium (>99.9%) was produced. Our results suggest anode and cathode current efficiencies of 93.5% and 89% respectively, indicating that the method is viable and extremely cost-effective, potentially dropping the cost of titanium to near that of aluminum.

Type
Rapid Communications
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCES

1Kroll, W.J.: The production of ductile titanium. Trans. Am. Electrochem. Soc. 78, 35 (1940).CrossRefGoogle Scholar
2Clayton, F.R., Mamantov, G., and Manning, D.L.: Electrochemical studies of titanium in molten fluorides. J. Electrochem. Soc. 120, 1193 (1973).CrossRefGoogle Scholar
3Wei, D., Okido, M., and Oki, T.: Characteristics of titanium deposits by electrolysis in molten chloride-fluoride mixture. J. Appl. Electrochem. 24, 923 (1994).CrossRefGoogle Scholar
4Oishi, T., Kawamura, H., and Ito, Y.: Formation and size control of titanium particles by cathode discharge electrolysis of molten chloride. J. Appl. Electrochem. 32, 819 (2002).CrossRefGoogle Scholar
5Lantelme, F., Kuroda, K., and Barhoun, A.: Electrochemical and thermodynamic properties of titanium chloride solutions in various alkali chloride mixtures. Electrochim. Acta 44, 421 (1998).CrossRefGoogle Scholar
6Lantelme, F. and Salmi, A.: Electrochemistry of titanium in NaCl–KCl mixture and influence of dissolved fluoride ions. J. Electrochem. Soc. 142, 3451 (1995).CrossRefGoogle Scholar
7Sadoway, D.R.: Electrochemical processing of refractory metals. JOM 43, 15 (1995).CrossRefGoogle Scholar
8Fried, N.A., Rhoads, K.G., and Sadoway, D.R.: Transference number measurements of TiO2-BaO melts by stepped-potential chronoamperometry. Electrochim. Acta 46, 3351 (2001).CrossRefGoogle Scholar
9Chen, G.Z., Fray, D.J., and Farthing, T.W.: Direct electrochemical reduction of titanium dioxide to titanium in molten calcium chloride. Nature 407, 361 (2000).CrossRefGoogle ScholarPubMed
10Fray, D.J.: Emerging molten salt technologies for metals production. JOM 53, 26 (2001).CrossRefGoogle Scholar
11Chen, G.Z. and Fray, D.J.: Electro-deoxidation of metal oxides, in Light Metals, edited by Anjier, J.L. (2001), p. 1147.Google Scholar
12Chen, G.Z. and Fray, D.J.: Voltammetric studies of the oxygen-titanium binary system in molten calcium chloride. J. Electrochem. Soc. 149, E445 (2002).CrossRefGoogle Scholar
13Wang, S.L. and Li, Y.J.: Reaction mechanism of direct electro-reduction of titanium dioxide in molten calcium chloride. J. Electroanal. Chem. 571, 37 (2004).CrossRefGoogle Scholar
14Okabe, T.H., Nakamura, M., Oishi, T., and Ono, K.: Electrochemical deoxidation of titanium. Metall. Trans. B 24, 449 (1993).CrossRefGoogle Scholar
15Ono, K. and Suzuki, R.O.: A new concept for producing Ti sponge: Caciothermic reduction. JOM 54, 59 (2002).CrossRefGoogle Scholar
16Okabe, T.H., Oishi, T., and Ono, K.: Deoxidation of titanium aluminide by Ca–Al alloy under controlled aluminum activity. Metall. Trans. B 23, 583 (1992).CrossRefGoogle Scholar
17Suzuki, R.O.: Calciothermic reduction of TiO2 and in situ electrolysis of CaO in the molten CaCl2. J. Phys. Chem. Solids 66, 461 (2005).CrossRefGoogle Scholar
18Myron, J.R. and Palmerton, P.: Electrorefining metallic titanium U.S. Patent No. 2 939 823 (1960).Google Scholar
19Popov, B.N., Kimble, M.C., and White, R.E.: Electrochemical behaviour of titanium(II) and titanium(III) compounds in lithium chloride/potassium chloride eutectic melts. J. Appl. Electrochem. 21, 351 (1991).CrossRefGoogle Scholar
20Wainer, E.: Cell feed material for the production of titanium U.S. Patent No. 2 868 703 (1959).Google Scholar
21Wainer, E. and Heights, C.: Ohio: Production of titanium U.S. Patent No. 2 722 509 (1955).Google Scholar
22Christle, J.H., Turner, J.A., and Osteryoung, R.A.: Square wave voltammetry at the dropping mercury electrode: Theory. Anal. Chem. 49, 1899 (1977).CrossRefGoogle Scholar
23Tokumoto, S.I., Tanaka, E., Kikuchi, T., Ogisu, K., and Tsumori, T.: Method of adjust a fused salt electrolytic bath U.S. Patent No. 4 113 582 (1978).Google Scholar