| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction and Processing
|
| Presentation Title |
Study on Pre–removal Antimony from Antimony–gold Concentrate Using Slurry Electrolysis |
| Author(s) |
Yonglu Zhang, Chengyan Wang, Xiaowu Jie, Wei Gao, Shufeng Ruan |
| On-Site Speaker (Planned) |
Yonglu Zhang |
| Abstract Scope |
Antimony has a negative effect on the gold extraction from antimony–gold concentrate, and it is necessary to remove antimony in advance. For a high calcium low antimony gold concentrate (Ca–Sb–Au ore), this study proposed to pre–remove antimony using slurry electrolysis in HCl–CaCl2 system. The results indicated that the optimal conditions were: CaCl2 300~350 g/L, electric quantity 1.2 times, HCl 30 g/L, time 3.5 h, and temperature 60 ℃. The leaching efficiency of antimony and calcium was higher than 96% and 98%, respectively, and gold was less than 1%. The dissolved antimony can be directly electrodeposited on the cathode to produce metallic antimony, the sulfur present in stibnite was transformed into elemental sulfur remaining in the residue, and the leaching residue can be used as raw material for further gold extraction. Thus, the separation of antimony and gold was achieved. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electrometallurgy, Hydrometallurgy, Other |