CAS OpenIR
Silver dissolution in a novel leaching system: Reaction kinetics study
Xiao, Li1,2; Han, Pei-wei1; Wang, Yong-liang1; Fu, Guo-yan1,2; Sun, Zhi1; Ye, Shu-feng1
2019-02-01
Source PublicationINTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
Volume26Issue:2Pages:168-177
AbstractEffective silver recovery is usually restricted by either environmental pollution or high recovery costs. To tackle the issues, this study introduces a novel method for the effective recovery of silver by utilizing the alkaline sodium thiosulfate-potassium ferricyanide leaching system. The reaction kinetics of silver dissolution in this system was investigated via the rotating disk electrode technology. The influences of important parameters, including the rotation speed, sodium thiosulfate concentration, potassium ferricyanide concentration, and temperature, on the silver dissolution rate were systematically investigated. The activation energy was measured to be 17.96 kJmol(-1) when the silver dissolution was controlled by a diffusion process. When the silver dissolution was in the region of mixed control, the reaction orders of ferricyanide and thiosulfate were found to be 0.57 and 0.19, respectively, and the reaction orders of ferricyanide and thiosulfate were 0.55 and 0.22, respectively, when the silver dissolution was controlled by surface reaction. This study has great potential for the development of an environmentally friendly silver recovery process from end--of-life products.
Keywordsilver recovery thiosulfate ferricyanide dissolution kinetics non-cyanide
DOI10.1007/s12613-019-1721-0
Language英语
WOS KeywordTHIOSULFATE ; GOLD ; RECOVERY ; CYANIDE ; TAILINGS ; THIOUREA ; METALS ; WASTES ; ORE
Funding ProjectKey Research Program of the Chinese Academy of Sciences[ZDRW-ZS-2018-1-2] ; Material Chemistry and Engineering Group, Institute of Process Engineering, Chinese Academy of Sciences
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
Funding OrganizationKey Research Program of the Chinese Academy of Sciences ; Material Chemistry and Engineering Group, Institute of Process Engineering, Chinese Academy of Sciences
WOS IDWOS:000458436000004
PublisherSPRINGER
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28091
Collection中国科学院过程工程研究所
Corresponding AuthorYe, Shu-feng
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Li,Han, Pei-wei,Wang, Yong-liang,et al. Silver dissolution in a novel leaching system: Reaction kinetics study[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2019,26(2):168-177.
APA Xiao, Li,Han, Pei-wei,Wang, Yong-liang,Fu, Guo-yan,Sun, Zhi,&Ye, Shu-feng.(2019).Silver dissolution in a novel leaching system: Reaction kinetics study.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,26(2),168-177.
MLA Xiao, Li,et al."Silver dissolution in a novel leaching system: Reaction kinetics study".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 26.2(2019):168-177.
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