Formation behavior of CaTiO_3 during electrochemical deoxidation of ilmenite concentrate to prepare Fe–Ti alloy  

作　　者：Xu-Yang Liu Mei-Long Hu Chen-Guang Bai Xue-Wei Lv 

机构地区：[1]College of Materials Science and Engineering,Chongqing University

出　　处：《Rare Metals》2016年第3期275-281,共7页稀有金属（英文版）

基　　金：financially supported by the Fundamental Research Funds for the Central Universities of China (No.CDJZR12130049);Chongqing University Postgraduates’ Science and Innovation Fund (No.CDJXS12131105)

摘　　要：The formation behavior of CaTiO3 during electro-deoxidization of ilmenite concentrate to prepare Fe–Ti alloy was investigated by experiments and simulation.The results indicate that the formation and decomposition of intermediate products,CaTiO3,are inevitable steps during electro-deoxidization of ilmenite concentrate.CaTiO3 can be generated through the hydrolyzation of molten salt and electrochemistry reaction during electrochemical process.The main reason for the generation of CaTiO3 is the electrochemistry reaction between Ca^2＋ from molten salt and TiO2 in the cathode.With the proceeding of the electro-deoxidization,CaTiO3 is further electrolyzed to form titanium sub-oxide.The current efficiency can be improved when CaTiO3 forms in the cathode by adding CaCO3 during sintering process.The formation behavior of CaTiO3 during electro-deoxidization of ilmenite concentrate to prepare Fe–Ti alloy was investigated by experiments and simulation.The results indicate that the formation and decomposition of intermediate products,CaTiO3,are inevitable steps during electro-deoxidization of ilmenite concentrate.CaTiO3 can be generated through the hydrolyzation of molten salt and electrochemistry reaction during electrochemical process.The main reason for the generation of CaTiO3 is the electrochemistry reaction between Ca^2＋ from molten salt and TiO2 in the cathode.With the proceeding of the electro-deoxidization,CaTiO3 is further electrolyzed to form titanium sub-oxide.The current efficiency can be improved when CaTiO3 forms in the cathode by adding CaCO3 during sintering process.

关 键 词：Perovskite Electrochemical reduction Ilmenite concentrate 

分 类 号：TF046[冶金工程—冶金物理化学] TF111.13