Reaction pathways during metallothermic reduction of TiCl4 by utilizing chemical potential diagrams

Toru H. Okabe, Tetsuya Uda, Eiki Kasai, Yoshio Waseda

Research output: Contribution to conferencePaperpeer-review

4 Citations (Scopus)

Abstract

Phase equilibria and reaction pathways during metallothermic reduction of TiCl4 has been considered by utilizing isothermal chemical potential diagram for Ti-M-Cl (M = Mg, Na, Al) at 1073 K. Importance of electronically mediated reaction (EMR) was discussed for each metallothermic reduction by explaining mechanism of titanium deposition in the Kroll or Hunter process. In the Kroll process, long-range electronically mediated reaction (LR-EMR), in which titanium deposit and reaction container act as electron conductor, was found to be dominant, and this may result in formation of sponge titanium. Both electron and ion transfer in NaCl solutions are quite likely to occur in the reaction pathway during sodiothermic reduction of TiCl4. Then, the formation of titanium powder in the Hunter process may be attributed to short-range electronically mediated reaction (SR-EMR). The possibility of pure titanium production by an aluminothermic reduction was also discussed.

Original languageEnglish
Pages133-151
Number of pages19
Publication statusPublished - 1997 Dec 1
EventProceedings of the 1997 126th TMS Annual Meeting - Indianapolis, IN, USA
Duration: 1997 Sep 141997 Sep 18

Other

OtherProceedings of the 1997 126th TMS Annual Meeting
CityIndianapolis, IN, USA
Period97/9/1497/9/18

ASJC Scopus subject areas

  • Engineering(all)

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