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Corrosion behavior of 316L stainless steel anode in alkaline sulfide solutions and the consequent influence on Ga electrowinning
Liu, Ling1,2; Wang, Mingyong1; Wang, Zhi1; Zhang, Yi1
2015-10-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume157Issue:OCTPages:285-291
Abstract

During Ga enrichment by ion exchange, sodium sulfide is an indispensable compound to elute Ga (III) from resin. The effects of residual S2- ions on the corrosion behavior of stainless steel anode and Ga electrodeposition are studied. It is found that 316L stainless steel anode is corroded seriously and Ga is hardly electrodeposited in the presence of 2.17 g/L S2-. The adsorption of HS- ions damages the passive film of anode surface, which leads to the formation of soluble and colloidal (NaFeS2)(n). After 48 h electrowinning, the weight loss of stainless steel anode (738 mg/cm(2)) in Ga solution with 2.17 g/L S2- is much larger than that (0.23 mg/cm(2)) in solution without S2-. Green-black precipitates are found in Ga (III) solution due to the degradation of colloidal (NaFeS2)(n). Meanwhile, the corrosion of stainless steel anode brings iron ions into Ga (III) solution. Iron species are deposited or absorbed on the cathode, which is unfavorable to Ga electrodeposition. At lower S2- concentration, both Fe and O are detected in Ga coatings. When S2- concentration is up to 2.17 g/L S2-, Ga electrodeposition is completely inhibited. (C) 2015 Elsevier B.V. All rights reserved.

KeywordGallium Sulfide Stainless Steel Electrowinning Corrosion
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.hydromet.2015.09.009
Indexed BySCI
Language英语
WOS KeywordCOAL FLY-ASH ; MILD-STEEL ; ELECTROCHEMICAL-BEHAVIOR ; IRON ; RECOVERY ; PASSIVATION ; ANTIMONY ; GALLIUM ; SURFACE ; SULFUR
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNatural Science Foundation of China(51422405 ; National Basic Research and Development Program of China(2013CB632606) ; Youth Innovation Promotion Association, CAS(2015036) ; 51374192)
WOS IDWOS:000364252700040
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19840
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Ling,Wang, Mingyong,Wang, Zhi,et al. Corrosion behavior of 316L stainless steel anode in alkaline sulfide solutions and the consequent influence on Ga electrowinning[J]. HYDROMETALLURGY,2015,157(OCT):285-291.
APA Liu, Ling,Wang, Mingyong,Wang, Zhi,&Zhang, Yi.(2015).Corrosion behavior of 316L stainless steel anode in alkaline sulfide solutions and the consequent influence on Ga electrowinning.HYDROMETALLURGY,157(OCT),285-291.
MLA Liu, Ling,et al."Corrosion behavior of 316L stainless steel anode in alkaline sulfide solutions and the consequent influence on Ga electrowinning".HYDROMETALLURGY 157.OCT(2015):285-291.
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