The role of glycine in the ammonium thiocyanate leaching of gold
文献类型：期刊论文
| 作者 | Wu, Hao1,2; Feng, Yali1; Huang, Wanfu3; Li, Haoran2; Liao, Shengde1 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 185页码:111-116 |
| 关键词 | Non-cyanide Gold extraction Ammonium thiocyanate Leaching theory |
| ISSN号 | 0304-386X |
| DOI | 10.1016/j.hydromet.2019.01.019 |
| 英文摘要 | Thiocyanate leaching is an efficient and environmentally friendly method to extract gold due to fast leaching speed, excellent reaction selectivity and slight environmental risks, but thiocyanate is easily oxidized to decompose by oxidant in the leaching process, resulting in large consumption of leaching agent. In this work, synergistic leaching experiments were carried out with a mixed reagent system of ammonium thiocyanate and glycine for exploring the role of glycine in thiocyanate leaching. And the theoretical mechanism of glycine in thiocyanate leaching was also investigated. The results showed that as glycine was added into the thiocyanate leaching solution, the decomposition reaction of thiocyanate would be lessened, resulting in lower ammonium thiocyanate consumption. Meanwhile, owing to its characteristic of gold dissolution, glycine can be used as an additional leaching agent to increase the gold leaching ratio. Optimized gold-extraction efficiency (93.15%) of gold-bearing flotation concentrate was achieved under the following conditions: a concentration of thiocyanate, glycine and oxidant Fe3+ at 0.6 mol/dm(3), 5 g/dm(3) and 0.05 mol/dm(3), respectively; stirring speed at 600 rpm; pH at 2; temperature at 298 K; leaching time of 3 h and a liquid-solid ratio of 4:1. |
| WOS关键词 | AMINO-ACIDS ; RECOVERY ; HYDROMETALLURGY ; COPPER ; ADSORPTION ; ORES |
| 资助项目 | China Ocean Mineral Resource RD Association[DY135-B2-15] ; Major Science and Technology Program for Water Pollution Control and Treatment[2015ZX07205-003] ; National Natural Science Foundation of China[21176242] ; National Natural Science Foundation of China[21176026] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000466255000015 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | China Ocean Mineral Resource RD Association ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28216]  |
| 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, State Key Lab Biochem Engn, Inst Proc Engn, Beijing, Peoples R China 3.Jiangxi Univ Sci & Technol, Sch Resource & Environm Engn, Ganzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Hao,Feng, Yali,Huang, Wanfu,et al. The role of glycine in the ammonium thiocyanate leaching of gold[J]. HYDROMETALLURGY,2019,185:111-116. |
| APA | Wu, Hao,Feng, Yali,Huang, Wanfu,Li, Haoran,&Liao, Shengde.(2019).The role of glycine in the ammonium thiocyanate leaching of gold.HYDROMETALLURGY,185,111-116. |
| MLA | Wu, Hao,et al."The role of glycine in the ammonium thiocyanate leaching of gold".HYDROMETALLURGY 185(2019):111-116. |
入库方式： OAI收割
来源：过程工程研究所
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