Pretreatment and thiosulfate leaching of refractory gold-bearing arsenosulfide concentrates
文献类型：期刊论文
| 作者 | Y. Q. Meng |
| 刊名 | Journal of University of Science and Technology Beijing
 |
| 出版日期 | 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 | |
| 公开日期 | 2012-04-14 |
| 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. |
入库方式： OAI收割
来源：金属研究所
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