Basic theory and optimization of gold containing antimony concentrate leaching by alkaline sulfide

doi:10.5277/ppmp18126

	Basic theory and optimization of gold containing antimony concentrate leaching by alkaline sulfide
	Wu, Hao 1,2; Feng, Yali 1; Li, Haoran 2; Liao, Shengde 1; Wang, Hongjun 1
刊名	PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
	2019
卷号	55 期号:1 页码:248-257
关键词	antimony concentrate leaching process alkaline leaching kinetics
ISSN号	1643-1049
DOI	10.5277/ppmp18126
英文摘要	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.
资助项目	Major Science and Technology Program for Water Pollution Control and Treatment[2015ZX07205-003] ; China Ocean Mineral Resources Research & Development Program[DY125-15-T-08]
WOS关键词	STIBNITE ; KINETICS ; DUST
WOS研究方向	Chemistry ; Mining & Mineral Processing
语种	英语
出版者	OFICYNA WYDAWNICZA POLITECHNIKI WROCLAWSKIEJ
WOS记录号	WOS:000456478200024
资助机构	Major Science and Technology Program for Water Pollution Control and Treatment ; China Ocean Mineral Resources Research & Development Program
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/27794]
专题	中国科学院过程工程研究所
通讯作者	Feng, Yali
作者单位	1.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
推荐引用方式 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.