CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
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 PublicationINTERNATIONAL JOURNAL OF MINERAL PROCESSING
ISSN0301-7516
Volume139Issue: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.

KeywordBauxite Desulfurization Kinetics Electrolysis Mineral Phase
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1016/j.minpro.2015.04.010
Indexed BySCI
Language英语
WOS KeywordSULFUR REMOVAL ; ORGANIC SULFUR ; COAL ; PYRITE ; CHLORINATION ; OXIDATION ; NACL
WOS Research AreaEngineering ; Mineralogy ; Mining & Mineral Processing
WOS SubjectEngineering, Chemical ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000356195800003
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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
AffiliationChinese 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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