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Direct electrochemical extraction of Ti_5Si_3 from pressed cathode pellets comprising of powdered Ti/Sicontaining metal oxide compounds was investigated by using molten salt electro-deoxidation technology.Three groups of mixtures including TiO_2 mixed with SiO_2,Ti-bearing blast furnace slag(TBFS) mixed with TiO_2, 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 Ti_5Si_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℃and 3.0-4.0 V in molten CaCl_2 electrolyte.The results show that the oxide components were electro-deoxidized effectively and Ti_5Si_3 could be directly extracted from these complex Ti/Si-containing metal oxide compounds.
Direct electrochemical extraction of Ti_5Si_3 from pressed cathode pellets including powdered Ti / Sicontaining metal oxide compounds was investigated by using molten salt electro-deoxidation technology. Three groups of mixtures including TiO_2 mixed with SiO_2, Ti-bearing blast furnace slag (TBFS) mixed with TiO_2, 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 Ti_5Si_3, and used as the starting materials in this experiment, respectively. pressed porous cylindrical pellet of the Ti / Si-containing compounds served as a cathode, and two different anode systems, ie, 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 Ti_5Si_3 cou ld be directly extracted from these complex Ti / Si-containing metal oxide compounds.