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Recovery and separation of Fe and Mn from simulated chlorinated vanadium slag by molten salt electrolysis
Liu, Shi-yuan1,2; Zhen, Yu-lan2; He, Xiao-bo3; Wang, Li-jun1; Chou, Kuo-chih3
2020-12-01
Source PublicationINTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
Volume27Issue:12Pages:1678-1686
AbstractTailings from the vanadium extraction process are discarded each year as waste, which contain approximately 30wt% of Fe. In our previous work, we extracted Fe and Mn from vanadium slag, and Fe and Mn existed in the form of FeCl2 and MnCl2 after chlorination by NH4Cl to achieve effective and green usage of waste containing Fe and Mn. In this work, square wave voltammetry (SWV) and cyclic voltammetry (CV) were applied to investigate the electrochemical behaviors of Fe2+ and Mn2+ in NaCl-KCl melt at 800 degrees C. The reduction processes of Fe2+ and Mn2+ were found to involve one step. The diffusion coefficients of FeCl2 and MnCl2 in molten salt of eutectic mixtures NaCl-KCl molten salt were measured. The electrodeposition of Fe and Mn were performed using two electrodes at a constant cell voltage. The Mn/Fe mass ratio of the electrodeposited product in NaCl-KCl-2.13wt%FeCl2-1.07wt%MnCl2 was 0.0625 at 2.3 V. After the electrolysis of NaCl-KCl-2.13wt%FeCl2-1.07wt%MnCl2 melted at 2.3 V, the electrolysis was again started under 3.0 V and the Mn/Fe mass ratio of the electrodeposited product was 36.4. This process provides a novel method to effectively separate Fe and Mn from simulated chlorinated vanadium slag.
Keywordvanadium slag molten salt electrolysis separation electrochemical analysis
DOI10.1007/s12613-020-2140-y
Language英语
WOS KeywordCOMPREHENSIVE UTILIZATION ; ELECTROCHEMICAL-BEHAVIOR ; IRON ; EXTRACTION ; MANGANESE ; CHROMIUM ; MELT ; TI
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS IDWOS:000603567900012
PublisherSPRINGER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/43086
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Li-jun
Affiliation1.Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Liu, Shi-yuan,Zhen, Yu-lan,He, Xiao-bo,et al. Recovery and separation of Fe and Mn from simulated chlorinated vanadium slag by molten salt electrolysis[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2020,27(12):1678-1686.
APA Liu, Shi-yuan,Zhen, Yu-lan,He, Xiao-bo,Wang, Li-jun,&Chou, Kuo-chih.(2020).Recovery and separation of Fe and Mn from simulated chlorinated vanadium slag by molten salt electrolysis.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,27(12),1678-1686.
MLA Liu, Shi-yuan,et al."Recovery and separation of Fe and Mn from simulated chlorinated vanadium slag by molten salt electrolysis".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 27.12(2020):1678-1686.
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