CAS OpenIR
Basic theory and optimization of gold containing antimony concentrate leaching by alkaline sulfide
Wu, Hao1,2; Feng, Yali1; Li, Haoran2; Liao, Shengde1; Wang, Hongjun1
2019
Source PublicationPHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
ISSN1643-1049
Volume55Issue:1Pages:248-257
Abstract

As sodium sulfide is easily oxidized to polysulfide and thiosulfate which have a gold leaching effect, gold would dissolve in leaching solution when extracting stibium from gold containing antimony concentrate by alkaline sulfide. Through leaching test and kinetics analysis, the decomposition regularity of sodium sulfide and leaching rate were studied under different leaching conditions. The results indicated that the gold content in antimony concentrate was 28.41g/Mg, and the content of antimony and sulfur was 36.01% and 14.04%, respectively. The main metallic minerals were native gold, arsenopyrite, stibnite, and the gangue minerals were mainly quartz. Anodic polarization curve shows reduced iron powder can increase the peak potential of the oxidation of the leaching solution and it can effectively prevent the decomposition of sodium sulfide and the dissolution of gold. Optimized stibium-extraction efficiency was achieved under the following conditions: a concentration of sodium sulfide and sodium hydroxide at 110g/ dm(3) and 20g/dm(3), respectively; a ratio of iron powder to concentrate of 1:30; a ratio of liquid to solid of 5:1; agitation speed of 600rad/min; reaction temperature of 353.15K; and a reaction time of 3 h. Under the optimized conditions, high antimony recovery (97.35%) and low gold dissolution (1.32%) were achieved.

KeywordAntimony Concentrate Leaching Process Alkaline Leaching Kinetics
DOI10.5277/ppmp18126
Language英语
WOS KeywordStibnite ; Kinetics ; Dust
Funding ProjectMajor Science and Technology Program for Water Pollution Control and Treatment[2015ZX07205-003] ; China Ocean Mineral Resources Research & Development Program[DY125-15-T-08]
WOS Research AreaChemistry ; Mining & Mineral Processing
WOS SubjectChemistry, Physical ; Mining & Mineral Processing
Funding OrganizationMajor Science and Technology Program for Water Pollution Control and Treatment ; China Ocean Mineral Resources Research & Development Program
WOS IDWOS:000456478200024
PublisherOFICYNA WYDAWNICZA POLITECHNIKI WROCLAWSKIEJ
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27795
Collection中国科学院过程工程研究所
Corresponding AuthorFeng, Yali
Affiliation1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wu, Hao,Feng, Yali,Li, Haoran,et al. Basic theory and optimization of gold containing antimony concentrate leaching by alkaline sulfide[J]. PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING,2019,55(1):248-257.
APA Wu, Hao,Feng, Yali,Li, Haoran,Liao, Shengde,&Wang, Hongjun.(2019).Basic theory and optimization of gold containing antimony concentrate leaching by alkaline sulfide.PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING,55(1),248-257.
MLA Wu, Hao,et al."Basic theory and optimization of gold containing antimony concentrate leaching by alkaline sulfide".PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING 55.1(2019):248-257.
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