Direct electrochemical extraction of Ti5Si3 from Ti/Si-containing metal oxide compounds in molten CaCl2

作者：Zou Xing Li^*; Lu Xiong Gang; Xiao Wei; Zhou Zhong Fu; Zhong Qing Dong; Ding Wei Zhong

来源：Journal of Shanghai Jiaotong University (Science), 2013, 18(1): 111-117.

DOI：10.1007/s12204-013-1373-6

• Anode system
• Cylindrical pellets
• Electro-Deoxidation
• Electrochemical experiments
• Electrochemical extraction
• Inert solids
• Metal oxides
• Molten salt
• Oxide components
• Oxide compounds
• Solid oxide
• Stoichiometric ratio
• Target composition
• Ti-bearing blast furnace slag
• TiO

Direct electrochemical extraction of Ti5Si3 from pressed cathode pellets comprising of powdered Ti/Si-containing metal oxide compounds was investigated by using molten salt electro-deoxidation technology. Three groups of mixtures including TiO2 mixed with SiO2, Ti-bearing blast furnace slag (TBFS) mixed with TiO2, and TBFS mixed with high-titanium slag (HTS) were prepared at the same stoichiometric ratio (Ti: Si = 5: 3) corresponding to the target composition of Ti5Si 3, and used as the starting materials in this experiment, respectively. The pressed porous cylindrical pellet of the Ti/Si-containing compounds served as a cathode, and two different anode systems, i.e., the inert solid oxide oxygen-ion-conducting membrane (SOM) based anode system and graphite-based anode system were used contrastively. The electrochemical experiment was carried out at 900-1050 C and 3.0-4.0 V in molten CaCl 2 electrolyte. The results show that the oxide components were electro-deoxidized effectively and Ti5Si3 could be directly extracted from these complex Ti/Si-containing metal oxide compounds.

• 出版日期2013
• 单位上海大学