Pretreatment and thiosulfate leaching of refractory gold-bearing arsenosulfide concentrates

CORC > 金属研究所 > 中国科学院金属研究所

	Pretreatment and thiosulfate leaching of refractory gold-bearing arsenosulfide concentrates
	Y. Q. Meng
刊名	Journal of University of Science and Technology Beijing
	2005
卷号	12 期号:5 页码:385-389
关键词	refractory gold-bearing arsenosulfide concentrates pretreatment alkaline leaching self-leaching of gold thiosulfate leaching
ISSN号	1005-8850
中文摘要	A hydrometallurgical process for refractory gold-bearing arsenosulfide concentrates at ambient temperature and pressure was presented, including fine grinding with intensified alkali-leaching (FGIAL), enhanced agitation alkali-leaching (EAAL), thiosulfate leaching and displacement. Experimental results on a refractory gold concentrate showed that the total consumption of NaOH in alkaline leaching is only 41% of those theoretically calculated under the conditions of full oxidization for the same amount of arsenides and sulfides transformed into arsenates and sulfates, and 72.3% of gold is synchro-dissoluted by thiosulfate self-generated during alkaline leaching. After alkaline leaching, thiosulfate leaching was carried out for 24 h. The dissolution of gold is increased to 91.9% from 4.6% by cyanide without the pretreatment. The displacement of gold by zinc powder in the solution gets to 99.2%. Due to an amount of thiosulfate self-generated during alkaline leaching, the reagent addition in thiosulfate leaching afterwards is lower than the normal.
原文出处	://WOS:000238380200001
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/34985]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Q. Meng. Pretreatment and thiosulfate leaching of refractory gold-bearing arsenosulfide concentrates[J]. Journal of University of Science and Technology Beijing,2005,12(5):385-389.
APA	Y. Q. Meng.(2005).Pretreatment and thiosulfate leaching of refractory gold-bearing arsenosulfide concentrates.Journal of University of Science and Technology Beijing,12(5),385-389.
MLA	Y. Q. Meng."Pretreatment and thiosulfate leaching of refractory gold-bearing arsenosulfide concentrates".Journal of University of Science and Technology Beijing 12.5(2005):385-389.