Reduction of CaTiO3 by electrolysis in the molten salt CaCl2-CaO

Hiromi Noguchi, Shungo Natsui, Tatsuya Kikuchi, Ryosuke O. Suzuki

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 550K were required to eliminate water. Optimization of both water removal and the oxide particle size produced the lowest oxygen content (0.42mass%O) in the powder.

Original languageEnglish
Pages (from-to)82-87
Number of pages6
JournalElectrochemistry
Volume86
Issue number2
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes

Keywords

  • Calciothermic reduction
  • Calcium chloride
  • Calcium titanium oxide
  • Molten salt

ASJC Scopus subject areas

  • Electrochemistry

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