論文

査読有り
2013年

Electrolysis of TiO2 or TiCl2 Using Bi Liquid Cathode in Molten CaCl2

JOURNAL OF THE ELECTROCHEMICAL SOCIETY
  • Yuya Kado
  • ,
  • Akihiro Kishimoto
  • ,
  • Tetsuya Uda

160
10
開始ページ
E139
終了ページ
E142
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1149/2.102310jes
出版者・発行元
ELECTROCHEMICAL SOC INC

A new continuous smelting process of Ti using Bi-Ti liquid alloys is examined. In this process, titanium ore (TiO2) are reduced on the Bi liquid cathode to form Bi-Ti liquid alloys and, subsequently, electrorefining or vacuum distillation is performed to get pure Ti metal. Bi was used as a solvent to dissolve Ti since it has a large solubility of Ti and a relatively low vapor pressure suitable for the proposed process. Electrochemical reduction of TiO2 in molten CaCl2 produced the Bi-Ti alloys containing 0.6-2.2 at% of Ti and 17.9-34.9 at% of Ca. Calcium contamination in the alloys is attributed to its small activity coefficient in Bi. However, in case of electrolysis of TiCl2, Ti concentration in the alloy reached 29.0 at% and Ca contamination was suppressed. Thermodynamic consideration using E-pO(2-) diagram for the Ti-Ca-O-Cl system indicates that it is important to keep high pO(2-), in other words, low O2- concentration in the electrolyte to obtain the Bi-Ti alloys to keep low level of Ca contamination. (C) 2013 The Electrochemical Society. All rights reserved.

Web of Science ® 被引用回数 : 9

リンク情報
DOI
https://doi.org/10.1149/2.102310jes
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000326207400070&DestApp=WOS_CPL

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