|
| Study on Hydrometallurgical Desulfurization for Pressure Leaching Residue from Copper Smelting Dust |
|
Received:August 17, 2021
Revised:September 03, 2021
Accepted:September 06, 2021
Published Online:November 19, 2021
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2021.12.016 |
| KeyWord:copper smelting; flue dust; pressure oxidation leaching; leach residue; desulfurization |
| Author | Institution |
| GUO Dong-dong |
武汉科技大学钢铁冶金及资源利用教育部重点实验室 |
| QIN Qing-wei |
武汉科技大学钢铁冶金及资源利用教育部重点实验室 |
| SHEN Hong-hai |
湖北大江环保科技股份有限公司 |
| CHEN Rong-sheng |
湖北大江环保科技股份有限公司 |
| WANG Ming-xi |
湖北大江环保科技股份有限公司 |
| TANG Hai-bo |
湖北大江环保科技股份有限公司 |
| ZENG Su-qin |
湖北大江环保科技股份有限公司 |
| FENG Jin-ting |
武汉科技大学 钢铁冶金及资源利用教育部重点实验室 |
| XU Wen-jun |
湖北大江环保科技股份有限公司 |
|
| Hits: 1824 |
| Download times: 1927 |
| Abstract: |
| Clean utilization of copper smelting dust is always one of the themes of copper metallurgy. Pressure leaching technology of copper smelting dust can effectively achieve the purpose of comprehensive utilization. Hydrometallurgical desulfurization and electrolytic deposition of leaching residue are of great significance to eliminate emission of lead dust and lead vapor. Sodium carbonate was used as desulfurizer to carry out experiment of carbonate conversion desulfurization and pyrometallurgical processes. Effects of operation parameters on desulfurization rates were investigated, and the optimum operation conditions were determined. After ultrasonic treatment, particle size of d0.5 drops from 22.36 μm to 10.88 μm, d0.9 drops from 101.06 μm to 72.58 μm, and particle specific surface area rises from 13.24 m2/g to 15.89 m2/g. Desulfurization rate of leach residue rises from 76.61% to 85.52%. The results of oxygen-rich side blown bath smelting tests show that direct recovery of lead rises from 77.13% (leach residue) to 89.13% (desulfurized residue), and direct recovery of copper rises from 69.21% (leach residue) to 82.50% (desulfurized residue). |
| Close |