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A novel process to prepare high-purity vanadyl sulfate electrolyte from leach liquor of sodium-roasted vanadium slag

文献类型：期刊论文

作者Zhang, Xukun1,2,3; Meng, Fancheng1,2,3; Zhu, Zhaowu1,2; Chen, Desheng1,2; Zhao, Hongxin1,2; Liu, Yahui1,2; Zhen, Yulan1,2; Qi, Tao1,2; Zheng, Shili1,2; Wang, Meng4
刊名HYDROMETALLURGY
出版日期2022-02-01
卷号208页码:10
关键词Vanadium redox flow battery Vanadyl sulfate electrolyte Solvent extraction Reduction-precipitation Chromium removal Vanadium slag
ISSN号0304-386X
DOI10.1016/j.hydromet.2021.105805
英文摘要The leach liquor of sodium-roasted vanadium slag in vanadium industry is an alkaline solution containing vanadium, sodium, chromium, and other impurities, and preparing high-purity vanadyl sulfate electrolyte (used in vanadium redox flow battery) directly from this solution is challenging but cost-effective. A novel process consisting of selective reduction-precipitation of chromium and solvent extraction of vanadium was proposed and optimized in this study. Approximately 90% of Cr(VI) in the solution was reduced to Cr(III) and precipitated after adding sodium sulfite at a pH of 5.77 and 25?, while V(V) remained in this process and needed a further reduction to V(IV) prior to extraction. More than 99.9% of V(IV) remained in the solution was extracted by two stage extraction using the "P507 + TBP + kerosene " extractant system at a pH of 2.00 and an organic-to-aqueous phase ratio of 1.5:1. Sodium entrained in the organic phase was washed off through three-stage scrubbing. A high-purity vanadyl sulfate solution of 2.1 mol L-1 was prepared by two-stage stripping using 5.5 mol L-1 sulfuric acid. According to the slope analysis and infrared spectra, the extraction of V(IV) by P507 follow the cation exchange mechanism. This study provides a feasible way to remove chromium and recover vanadium in the form of vanadyl sulfate from the industrial leach liquor of sodium-roasted vanadium slag.
WOS关键词REDOX FLOW BATTERIES ; SELECTIVE EXTRACTION ; POSITIVE ELECTROLYTE ; HIGH-EFFICIENT ; CHROMIUM ; RECOVERY ; REMOVAL ; SEPARATION
资助项目National Key R&D Program of China[2018YFC1900500] ; National Key R&D Program of China[2018YFE0123100] ; Beijing Municipal Natural Science Foundation[2202253] ; National Natural Science Foundation of China[51804289] ; National Natural Science Foundation of China[21908231] ; National Natural Science Foundation of China[22078343] ; National Natural Science Foundation of China[51774260] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; CAS Interdisciplinary Innovation Team ; Special Project for Transformation of Major Technological Achievements in Hebei Province[19044012Z] ; Province Key R&D Program of Hebei[20374105D] ; Innovation Ability Promotion Plan Pro-gram of Hebei Province[20564001D] ; Hengshui Special Consultation Project of Science and Technology Fund
WOS研究方向Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000774287000004
出版者ELSEVIER
资助机构National Key R&D Program of China ; Beijing Municipal Natural Science Foundation ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; CAS Interdisciplinary Innovation Team ; Special Project for Transformation of Major Technological Achievements in Hebei Province ; Province Key R&D Program of Hebei ; Innovation Ability Promotion Plan Pro-gram of Hebei Province ; Hengshui Special Consultation Project of Science and Technology Fund
源URL[http://ir.ipe.ac.cn/handle/122111/52628]  
专题中国科学院过程工程研究所
通讯作者Meng, Fancheng; Wang, Lina
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met Res, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 101408, Peoples R China
4.HeBei Zhongke Tongchuang Vanadium & Titanium Tech, Hengshui 053000, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xukun,Meng, Fancheng,Zhu, Zhaowu,et al. A novel process to prepare high-purity vanadyl sulfate electrolyte from leach liquor of sodium-roasted vanadium slag[J]. HYDROMETALLURGY,2022,208:10.
APA Zhang, Xukun.,Meng, Fancheng.,Zhu, Zhaowu.,Chen, Desheng.,Zhao, Hongxin.,...&Wang, Lina.(2022).A novel process to prepare high-purity vanadyl sulfate electrolyte from leach liquor of sodium-roasted vanadium slag.HYDROMETALLURGY,208,10.
MLA Zhang, Xukun,et al."A novel process to prepare high-purity vanadyl sulfate electrolyte from leach liquor of sodium-roasted vanadium slag".HYDROMETALLURGY 208(2022):10.

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来源：过程工程研究所

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