Calciothermic Reduction in Molten Calcium Chloride

• Suzuki, Ryosuke O.

Bibliographic Information

Other Title

• 溶融塩化カルシウム中でのカルシウム還元
• ヨウユウ エンカ カルシウム チュウ デ ノ カルシウム カンゲン

Abstract

Molten calcium chloride is one of the suitable media for reduction of oxides when it coexists with metallic calcium. It dissolves about 4 mol% Ca and 20 mol% CaO, which drives calciothermic reduction more effectively. Many reactive metals such as Ti, Ta and Nb could be successively reduced to match with the commercial quality. Diffusion of CaO from the solid layer adhered to the produced metal particles is a key to enhance deoxidation from the metal. The recycling of CaO was proposed using the electrolysis in CaCl2 melt, which was called OS method. In a few hours at 1173 K, a good quality of Ti was formed as powder. The differences between this OS process and FFC process were studied experimentally. MgO or ZrO2 membrane helps to avoid carbon contamination and to increase the current efficiency.

Journal

• 溶融塩および高温化学

  溶融塩および高温化学 49 (1), 27-32, 2006-02

  電気化学会 溶融塩委員会

Details

• CRID: 1050001339012134400
• NII Article ID: 40007161621
• NII Book ID: AN10179993
• ISSN: 09161589
• HANDLE: 2115/50833
• NDL BIB ID: 7839698
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7839698
• Text Lang: ja
• Article Type: journal article
• Data Source:
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN