| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Process Metallurgy and Environmental Engineering: An EPD Symposium in Honor of Takashi Nakamura
|
| Presentation Title |
Investigation of Roast- Leach of High Sulphur Containing Slag from Luanshya Zambia |
| Author(s) |
Yotamu Hara, Yaki Chiyokoma Namiluko, Brenda Batsirai Chitewo, Rainford Hara, Stephen Parirenyatwa |
| On-Site Speaker (Planned) |
Yaki Chiyokoma Namiluko |
| Abstract Scope |
Copper smelting slag from Luanshya town in the Copperbelt province of Zambia contains significant amounts of elemental sulphur (about 37 weight %) which was dumped by the community. Leached tests with and without pre-treatment were carried out on the material. Direct leaching (without pre-treatment) yielded maximum recovery of about 26 % for copper while cobalt and chromium could not be extracted. Pre-treament was done by roasting the material in air at a temperature range of 150 – 700 ⁰C. The roasted calcine was leached at 33% solids and pH of 1.8. Copper leach efficiency of about 82 % was obtained. The dissolution of cobalt and chromium during leaching was dependent on roasting temperature. Leach efficiency for cobalt and chromium decreased with increase in roasting temperature. It was concluded that high sulphur containing slag material should be processed via air roasting followed by leaching. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Extraction and Processing, |