Preparation of vanadium electrolyte from vanadium shale leaching solution with high concentration chloride using D2EHPA

被引：10
作者：
Liu, Hong [1 ,2 ,3 ,4 ]
Zhang, Yi-min [1 ,2 ,3 ,4 ]
Liu, Tao [1 ,2 ,3 ,4 ]
Huang, Jing [1 ,2 ,3 ,4 ]
Chen, Li-ming [1 ,2 ,3 ,4 ]
Hu, You-wen [1 ,2 ,3 ,4 ]
机构：
[1] Wuhan Univ Sci & Technol, Coll Resource & Environm Engn, Wuhan 430081, Peoples R China
[2] Wuhan Univ Sci & Technol, State Environm Protect Key Lab Mineral Met Resourc, Wuhan 430081, Peoples R China
[3] Wuhan Univ Sci & Technol, Hubei Collaborat Innovat Ctr High Efficient Utiliz, Wuhan 430081, Peoples R China
[4] Wuhan Univ Sci & Technol, Hubei Prov Engn Technol Res Ctr High Efficient Cle, Wuhan 430081, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2023年 / 33卷 / 05期
基金：
中国国家自然科学基金;
关键词：
vanadium shale; solvent extraction; vanadium electrolyte; electrochemical performance; SULFURIC-ACID-SOLUTION; REDOX-FLOW BATTERY; SOLVENT-EXTRACTION; SYNERGISTIC EXTRACTION; SELECTIVE SEPARATION; RECOVERY; MEMBRANE; SYSTEM; CHROMIUM; REMOVAL;
D O I：
10.1016/S1003-6326(23)66206-5
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A process for preparing vanadium electrolyte accompanied by the recovery of valuable elements from vanadium shale was proposed. The results showed that under the optimal extraction conditions of the feed solution at a pH of 2.6, D2EHPA concentration of 20%, phase ratio (O/A) of 1:1, extraction time of 8 min, H2SO4 concentration of 4 mol/L, and stripping time of 30 min, the vanadium extraction rate was 99.3% and the vanadium stripping rate was 99.8%. The composition and electrochemical performance of the electrolyte were studied in detail. The solution chemical and FTIR analysis showed that chloride ions in the leaching solution formed complexes with vanadium ions, promoting vanadium extraction. The proposed method in this study realized the comprehensive utilization of vanadium shale and prevented toxic environmental pollution in the preparation process of vanadium electrolyte.
引用
收藏
页码：1594 / 1608
页数：15
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