Environmental and energy gains from using molten magnesium–sodium–potassium chlorides for electro-metallisation of refractory metal oxides

作     者：Wei Li Yating Yuan Xianbo Jin Hualin Chen George Z.Chen 

作者机构：College of Chemistry and Molecular SciencesHubei Key Laboratory of Electrochemical Power SourcesWuhan University Department of Rare MetalsState Key Laboratory for Separation and Comprehensive Utilization of Rare MetalsGuangdong Key Laboratory for Development and Application of Rare EarthsGuangzhou Research Institute of Non-ferrous Metals Department of Chemical and Environmental EngineeringFaculty of EngineeringUniversity of Nottingham 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2015年第25卷第6期

页      面：650-653页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080601[工学-冶金物理化学] 0702[理学-物理学] 

基　　金：the NSFC,Ministry of Education of China,the EPSRC,Science and Technology Program of Guangzhou,Guangdong Nat.Sci.Found.,Nat.Key Fundamental R&D Program of China Nat.Hi-Tech R&D Program of China for financial support (Grant nos.20773094,21173161,51204060,NCET-110397,EP/J000582/1,201504010010,S2012040007501,2015A030313802,2007CB613801,2009AA03Z503) 

主　　题：Electrometallisation Molten salt Tantalum Electro-reduction Magnesium chloride 

摘      要：The molten eutectic mixture of magnesium,sodium and potassium chlorides(Mg Cl2–Na Cl–KCl) has inappreciable solubility for oxide ions,and can help disengage a carbon anode from the oxide ions generated at a metal oxide cathode,and effectively avoid carbon dioxide *** disengaging strategy was successfully demonstrated in electro-reduction of solid oxides of zirconium and *** has led to significantly higher current efficiency(93%),and lower energy consumption(1.4 k W h kg 1) in electrolysis of tantalum oxide to tantalum metal compared to the conventional electrolysis in molten calcium chloride(e.g.78% and 2.4 k W h/kg-Ta).