Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Articles
Reduction of CaTiO3 by Electrolysis in the Molten Salt CaCl2-CaO
Hiromi NOGUCHIShungo NATSUITatsuya KIKUCHIRyosuke O. SUZUKI
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JOURNALS OPEN ACCESS

2018 Volume 86 Issue 2 Pages 82-87

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Abstract

The reduction of CaTiO3 to generate Ti powder with a low content of oxygen was examined by electrolysis in a CaCl2-CaO melt. Using various sizes of the raw oxide particles, the concentration profile of the residual oxygen in the cathode basket suggests a reduction mechanism involving calcium from the melt. The residual oxygen content was influenced by the dehydration method. Vacuum dehydration above the melting temperature and decomposition of CaCl2 hydrates below 550 K were required to eliminate water. Optimization of both water removal and the oxide particle size produced the lowest oxygen content (0.42 mass%O) in the powder.

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© 2018 The Electrochemical Society of Japan
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