Intensified alkaline leaching pretreatment of refractory gold concentrates at common temperature and pressure
文献类型：期刊论文
| 作者 | Y. Q. Meng ; M. J. Wu ; S. L. Su ; L. B. Wang |
| 刊名 | Transactions of Nonferrous Metals Society of China
 |
| 出版日期 | 2003 |
| 卷号 | 13期号:2页码:426-430 |
| 关键词 | refractory gold concentrates grinding-leaching intensified alkaline leaching (IAL) pretreatment common temperature and pressure |
| ISSN号 | 1003-6326 |
| 中文摘要 | A new process for the hydrometallurgy of refractory gold concentrates was presented. The process comprises grinding-leaching, intensified alkaline leaching (IAL), cyanidation and adsorption. In a stirring-type pulverizing-leaching tower mill, the concentrate is ground to <35. 6 μm of 95. 5 % while simultaneously leached by NaOH of 12 kg/t, then carried out intensified alkaline leaching for 48 h by NaOH of 108 kg/t in enhanced agitation tanks with the pulp concentration of 40% solids at the environmental temperature of 9. 5 &SIM; 13. 5 &DEG;C and the environmental pressure of 10(5) Pa. The oxidation rate of As is 94. 9%, and 47. 6% for S. The total consumption of NaOH is only 20% of that theoretically calculated under the conditions of full oxidation at the same oxidation rates of arsenic to arsenate and sulfur to sulfate. The gold leaching rate by NaCN in 24 h is increased from 9. 2% before pretreatment to 94. 2%. The consumption of NaCN is 7. 5 kg/t, which is one times less than that before pretreatment. The extraction cost of gold is about 422 Yuan/t. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35969]  |
| 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,M. J. Wu,S. L. Su,et al. Intensified alkaline leaching pretreatment of refractory gold concentrates at common temperature and pressure[J]. Transactions of Nonferrous Metals Society of China,2003,13(2):426-430. |
| APA | Y. Q. Meng,M. J. Wu,S. L. Su,&L. B. Wang.(2003).Intensified alkaline leaching pretreatment of refractory gold concentrates at common temperature and pressure.Transactions of Nonferrous Metals Society of China,13(2),426-430. |
| MLA | Y. Q. Meng,et al."Intensified alkaline leaching pretreatment of refractory gold concentrates at common temperature and pressure".Transactions of Nonferrous Metals Society of China 13.2(2003):426-430. |
入库方式： OAI收割
来源：金属研究所
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