Electrolysis of CaO in the Molten CaCl2 for Direct Reduction of TiO2
Electrochemical behavior of CaOCaCl2 melt was studied from several experimental approaches to promote OS process, i. e. ,the calciothermic reduction of the titanium oxide with electrolysis of CaO dissolved in the molten CaCl2. The predicted existence of Ca concentrated region near the cathode was experimentally confirmed both by the reduction under electrical isolation and by wet chemical analysis of the solidified salts. It is deduced from the electrode-shielding methods that the total rate of CaO electrolysis is controlled by O2- transportation in the CaCl2-CaO melt. In CaTiO3 reduction, however, the oxygen diffusion in the formed Ti layer and the anodic surface area is rate-determing factors. The oxygen absorbing anode based on LaGaO3 ionic conductor could pomp up the oxygen gas from the CaCl2 melt.
Molten salt electrolysis calcium chloride direct reduction TiO2
Ryosuke O. Suzuki Naoto Kobayashi Kei-ichi Kobayashi Daisuke Yamada Shogo Osaki Reyna Famila Descallar-Arriesgado Tatsuya Kikuchi
Faculty of Engineering,Hokkaido University,Kita 13,Nishi 8,Kita-ku,Sapporo,Hokkaido 060-8628 Japan
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
116-120
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）