Recovery and separation of Fe and Mn from simulated chlorinated vanadium slag by molten salt electrolysis

doi:10.1007/s12613-020-2140-y

	Recovery and separation of Fe and Mn from simulated chlorinated vanadium slag by molten salt electrolysis
	Liu, Shi-yuan 1,2; Zhen, Yu-lan 2; He, Xiao-bo 3; Wang, Li-jun 1; Chou, Kuo-chih 3
刊名	INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
	2020-12-01
卷号	27 期号:12 页码:1678-1686
关键词	vanadium slag molten salt electrolysis separation electrochemical analysis
ISSN号	1674-4799
DOI	10.1007/s12613-020-2140-y
英文摘要	Tailings 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.
WOS关键词	COMPREHENSIVE UTILIZATION ; ELECTROCHEMICAL-BEHAVIOR ; IRON ; EXTRACTION ; MANGANESE ; CHROMIUM ; MELT ; TI
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000603567900012
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/43085]
专题	中国科学院过程工程研究所
通讯作者	Wang, Li-jun
作者单位	1.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
推荐引用方式 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.