Effect of sodium carbonate on alkaline self-leaching of gold from flotation gold ore
文献类型：期刊论文
| 作者 | Wu, Hao1,2,3; Feng, Yali3; Li, Haoran2; Li, Hailong3; Ju, Jinrong3 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 256页码:8 |
| 关键词 | Non-cyanide Gold extraction Alkaline self-leaching Oxygen pressure Sodium carbonate |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2020.117499 |
| 英文摘要 | Oxygen pressure alkaline self-leaching of gold is an environmentally friendly and smokeless leaching process. But the insoluble iron oxide generated will precipitate on the surface of parent minerals, thus reducing the oxidation reaction and gold leaching efficiency. Simultaneously, due to the different pH requirements of pyrite oxidation and gold leaching, the pH must be strictly controlled to achieve the maximum efficiency. In this work, dissolution effect and buffering effect of sodium carbonate in the gold self-leaching process were carried out. As the addition of sodium carbonate, soluble iron-carbonate complexes would be formed to remove passivation layer and expose fresh surface of pyrite, resulting in improvement pyrite oxidation rate. Meanwhile, the buffering capacity of sodium carbonate can avoid the thiosulfate decomposition and improve the concentration of thiosulfate. The maximum gold extraction efficiency of gold-bearing flotation concentrate could achieve 91.56% under the following condition: a concentration of sodium hydroxide, sodium carbonate and sodium carboxymethyl cellulose at 0.6 M, 0.3 M and 100 mg/dm(3), respectively; stirring speed at 800 rpm; temperature at 308.15 K; oxygen pressure at 0.5 Mpa; leaching time of 18 h and a liquid-solid ratio of 5:1. |
| WOS关键词 | AMMONIACAL THIOSULFATE ; MINERAL DISSOLUTION ; PYRITE OXIDATION ; BICARBONATE SOLUTIONS ; HEMATITE DISSOLUTION ; CONCENTRATE CALCINE ; CYANIDE ; RECOVERY ; PRETREATMENT ; ADSORPTION |
| 资助项目 | China Ocean Mineral Resource RD Association[DY135B215] ; National Natural Science Foundation of China[21176242] ; National Natural Science Foundation of China[21176026] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000675458700003 |
| 出版者 | ELSEVIER |
| 资助机构 | China Ocean Mineral Resource RD Association ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/49470]  |
| 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.Taiyuan Univ Sci & Technol, Sch Environm & Safety, Taiyuan, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing, Peoples R China 3.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Hao,Feng, Yali,Li, Haoran,et al. Effect of sodium carbonate on alkaline self-leaching of gold from flotation gold ore[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,256:8. |
| APA | Wu, Hao,Feng, Yali,Li, Haoran,Li, Hailong,&Ju, Jinrong.(2021).Effect of sodium carbonate on alkaline self-leaching of gold from flotation gold ore.SEPARATION AND PURIFICATION TECHNOLOGY,256,8. |
| MLA | Wu, Hao,et al."Effect of sodium carbonate on alkaline self-leaching of gold from flotation gold ore".SEPARATION AND PURIFICATION TECHNOLOGY 256(2021):8. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。