Desulfurization kinetics and mineral phase evolution of bauxite water slurry (BWS) electrolysis | |
Gong, Xuzhong; Zhuang, Siyuan; Ge, Lan; Wang, Zhi; Wang, Mingyong | |
2015-06-10 | |
Source Publication | INTERNATIONAL JOURNAL OF MINERAL PROCESSING
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ISSN | 0301-7516 |
Volume | 139Issue:JUNPages:17-24 |
Abstract | The desulfurization kinetics and mineral phase evolution from bauxite water slurry (BWS) electrolysis were examined. The results showed that the desulfurization ratio in NaCl system increased with current density, and reached up to 96% at 0.22 A/cm(2). In contrast, the desulfurization ratio in NaOH system increased firstly, and then decreased with current density, which was relative to the lifetime of oxidizing media from electrolysis. It was noted that pH value of electrolyte had some crucial effects on oxidant species and surface of FeS2, and thus the desulfurization ratio increased with the decrease in pH value of electrolyte. According to desulfurization kinetics, electrolysis desulfurization in NaCl solution was controlled by internal diffusion, and the apparent activation energy was 18.68 kJ/mol. However, electrolysis desulfurization process in NaOH solution was controlled by interface chemical reaction, and the apparent activation energy was 25.77 kJ/mol. (c) 2015 Elsevier B.V. All rights reserved. |
Keyword | Bauxite Desulfurization Kinetics Electrolysis Mineral Phase |
Subtype | Article |
WOS Headings | Science & Technology ; Technology ; Physical Sciences |
DOI | 10.1016/j.minpro.2015.04.010 |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | SULFUR REMOVAL ; ORGANIC SULFUR ; COAL ; PYRITE ; CHLORINATION ; OXIDATION ; NACL |
WOS Research Area | Engineering ; Mineralogy ; Mining & Mineral Processing |
WOS Subject | Engineering, Chemical ; Mineralogy ; Mining & Mineral Processing |
WOS ID | WOS:000356195800003 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/19276 |
Collection | 湿法冶金清洁生产技术国家工程实验室 |
Affiliation | Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China |
Recommended Citation GB/T 7714 | Gong, Xuzhong,Zhuang, Siyuan,Ge, Lan,et al. Desulfurization kinetics and mineral phase evolution of bauxite water slurry (BWS) electrolysis[J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING,2015,139(JUN):17-24. |
APA | Gong, Xuzhong,Zhuang, Siyuan,Ge, Lan,Wang, Zhi,&Wang, Mingyong.(2015).Desulfurization kinetics and mineral phase evolution of bauxite water slurry (BWS) electrolysis.INTERNATIONAL JOURNAL OF MINERAL PROCESSING,139(JUN),17-24. |
MLA | Gong, Xuzhong,et al."Desulfurization kinetics and mineral phase evolution of bauxite water slurry (BWS) electrolysis".INTERNATIONAL JOURNAL OF MINERAL PROCESSING 139.JUN(2015):17-24. |
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Desulfurization kine(1162KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
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