Direct Reduction of Vanadium Oxide in the Molten Calcium Chloride

• Oka Yuichi

  Graduate School of Engineering, Hokkaido University

• Suzuki Ryosuke O.

  Graduate School of Engineering, Hokkaido University

Bibliographic Information

Other Title

• 溶融塩化カルシウム浴を用いた酸化バナジウムの直接還元
• ヨウユウ エンカ カルシウムヨク オ モチイタ サンカ バナジウム ノ チョクセツ カンゲン

Abstract

  A new process is proposed to reduce V₂O₅ by using calcium in molten CaCl₂ for vanadium production. It consists of the calcium reduction in molten CaCl₂ and the electrochemical reaction for the recovery of Ca from CaO in the same bath. V₂O₅ pellet was placed on cathode in order to react with Ca electrochemically generated near the cathode. V₂O₅ exists as liquid at the experimental temperature (1123 K), because of the melting point of 963 K for V₂O₅. At the initial stage of the reduction, liquid sample is reduced to solid CaV₂O₄. As the supplied quantity of electricity increased, the oxygen concentration in the vanadium samples decreased exponentially. Vanadium containing only 1800 ppm oxygen was obtained after the electrolysis for 34.4 ks.<br>

Journal

• Journal of the Japan Institute of Metals and Materials

  Journal of the Japan Institute of Metals and Materials 72 (3), 181-187, 2008

  The Japan Institute of Metals and Materials

Keywords

• molten salt electrolysis
• calciothermic reduction
• vanadium
• oxygen removal

Details

• CRID: 1390282681454138624
• NII Article ID: 10021149851
• NII Book ID: AN00062446
• DOI: 10.2320/jinstmet.72.181
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• HANDLE: 2115/74866
• NDL BIB ID: 9419630
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9419630
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet/72/3/72_3_181/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed