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| Electrolytic preparation and characterization of VCr alloys in molten salt from vanadium slag | |
| Liu, Shiyuan1,2; Wang, Lijun1,3; Chou, Kuo-chih4; Kumar, Ramachandran Vasant3 | |
| 2019-09-30 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 803Pages:875-881 |
| Abstract | Vanadium slag contains several critical elements like V, Ti, Cr, Fe and Mn. In our previous work, V and Cr have been enriched by selective chlorination, increasing from 10.05% to 14.95% and 5.84%-8.69% separately. V and Cr still maintain the trivalence state in molten salt. In the current work, the electrodeposition behaviors of V3+ and Cr3+ in NaCl-KCl molten salt at 800 degrees C were investigated using cyclic voltammetry (CV) and square wave voltammetry (SWV) with a tungsten electrode. It was found that the reduction processes of V3+ and Cr3+ consist of two steps, M3+/M2+, M2+/M. The diffusion coefficients of V3+ and Cr3+ in NaCl-KCl molten salt were measured by CV. The effect of VCl3/CrCl3 mass ratio on VCr alloy was investigated by a two-electrode under constant voltage. Pure Cr can be obtained at 2.8 V in the NaCl-KCl molten salt, while VCr alloy (3.71 mass % V-94.28 mass% Cr-2.01 mass % O) was obtained when electrolysis voltage was controlled to 2.8 V at 800 degrees C. The composition of VCr alloy can be designed by changing the molten salt composition. This method can be applied for direct preparation of VCr alloy from vanadium slag, thus offering the use of low cost raw materials with direct environmental benefits. (C) 2019 Published by Elsevier B.V. |
| Keyword | VCr alloy Electrodeposition NaCl-KCl-VCl3-CrCl3 molten salt |
| DOI | 10.1016/j.jallcom.2019.06.366 |
| Language | 英语 |
| WOS Keyword | EXTRACTION ; CHROMIUM ; BEHAVIOR ; OXIDES ; ALCL3 ; IRON |
| Funding Project | National Natural Science Foundation of China[51474141] ; National Natural Science Foundation of China[51774027] ; China Postdoctoral Science Foundation[2019M650848] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Organization | National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
| WOS ID | WOS:000476464900102 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/30367 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Lijun |
| Affiliation | 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 Cambridge, Dept Mat Sci & Met, 27 Charles Babbage Rd, Cambridge CB3 0FS, England 4.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Shiyuan,Wang, Lijun,Chou, Kuo-chih,et al. Electrolytic preparation and characterization of VCr alloys in molten salt from vanadium slag[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,803:875-881. |
| APA | Liu, Shiyuan,Wang, Lijun,Chou, Kuo-chih,&Kumar, Ramachandran Vasant.(2019).Electrolytic preparation and characterization of VCr alloys in molten salt from vanadium slag.JOURNAL OF ALLOYS AND COMPOUNDS,803,875-881. |
| MLA | Liu, Shiyuan,et al."Electrolytic preparation and characterization of VCr alloys in molten salt from vanadium slag".JOURNAL OF ALLOYS AND COMPOUNDS 803(2019):875-881. |
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