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Roles of Electrolyte Characterization on Bauxite Electrolysis Desulfurization with Regeneration and Recycling
Gong, Xuzhong; Wang, Zhi; Zhuang, Siyuan; Wang, Dong; Wang, Yuhua; Wang, Mingyong
2017-02-01
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN1073-5615
Volume48Issue:1Pages:726-732
Abstract

The recycling of NaCl used as supporting electrolyte for bauxite electrolysis was carried out in this study. The electrolyte was regenerated by adding anhydrous CaCl2 into the solution after filtration, and effects of electrolyte characterization on bauxite electrolysis were examined by observing the change in desulfurization ratio and cell voltage. The results indicated that the desulfurization ratio increased with increasing recycling times of electrolyte. In the meantime, the increase in recycling times has led to the decrease in pH value as well as the increase in Fe ion concentration in the electrolyte, which were the main reasons for the increase in the desulfurization ratio with increasing recycling of electrolyte. The pH value of electrolyte after second electrolysis was lower than 1.5, and the desulfurization ratio increased obviously due to the increase in Fe3+ concentration and suppression of jarosite formation. The increase in Ca2+ concentration did not apparently change desulfurization ratio and anode surface activity. However, with Ca2+ addition, the cathode surface was covered by CaSO4 center dot nH(2)O, thus resulting in the increase of cell voltage. (C) The Minerals, Metals & Materials Society and ASM International 2016

SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11663-016-0841-4
Indexed BySCI
Language英语
WOS KeywordSlurry Bws Electrolysis ; Sulfur Removal ; Water Slurry ; Pyrite Oxidation ; Catalytic-oxidation ; Organic Sulfur ; Coal ; Kinetics ; System ; Natrojarosite
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNatural Science Foundation of China(51004090 ; Youth Innovation Promotion Association, CAS(2015036) ; 51474198)
WOS IDWOS:000392295500069
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21884
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,Wang, Zhi,Zhuang, Siyuan,et al. Roles of Electrolyte Characterization on Bauxite Electrolysis Desulfurization with Regeneration and Recycling[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2017,48(1):726-732.
APA Gong, Xuzhong,Wang, Zhi,Zhuang, Siyuan,Wang, Dong,Wang, Yuhua,&Wang, Mingyong.(2017).Roles of Electrolyte Characterization on Bauxite Electrolysis Desulfurization with Regeneration and Recycling.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,48(1),726-732.
MLA Gong, Xuzhong,et al."Roles of Electrolyte Characterization on Bauxite Electrolysis Desulfurization with Regeneration and Recycling".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 48.1(2017):726-732.
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