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Selective extraction of titanium from Ti-bearing slag via the enhanced depolarization effect of liquid copper cathode

Selective extraction of titanium from Ti-bearing slag via the enhanced depolarization effect of liquid copper cathode

作     者:Zhenghao Pu Handong Jiao Zhishan Mi Mingyong Wang Shuqiang Jiao Zhenghao Pu;Handong Jiao;Zhishan Mi;Mingyong Wang;Shuqiang Jiao

作者机构:State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing 100083China Beijing Advanced Innovation Center for Materials Genome EngineeringCorrosion and Protection CenterUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物:《Journal of Energy Chemistry》 (能源化学(英文版))

年 卷 期:2020年第29卷第3期

页      面:43-48页

核心收录:

学科分类:083002[工学-环境工程] 0830[工学-环境科学与工程(可授工学、理学、农学学位)] 080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程] 

基  金:supported by the National Natural Science Foundation of China(51725401) the Fundamental Research Funds for the Central Universities(FRF-TP-18-010B1) 

主  题:Titanium alloys Molten oxides electrolysis Liquid cathode Selective depolarization 

摘      要:Ti-bearing slag(TiO220 wt%)is a valuable titanium secondary *** extraction of titanium from the slag is difficult due to the complex composition and *** molten oxide electrolysis is considered as a promising method,silicon will be preferentially electroreduced compared to titanium due to low theoretical decomposition *** this work,a liquid copper cathode is used to selectively extract titanium from molten Al2O3-MgO-CaO-TiO2-SiO2 *** is found that comparing to silicon,titanium can be preferentially reduced by one-step electron transfer due to the enhanced depolarization effect on a liquid copper ***,Ti-Cu alloys are firstly obtained from molten Ti-bearing slag,and then Ti-Si alloys are co-electrodeposited in the molten oxide electrolyte with low TiO2 *** may be ascribed to the larger binding force between titanium and copper than that between silicon and *** provides an effective strategy for the separation of titanium from of Ti-bearing slag.

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