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| Concentrated Sulfuric Acid Pre-activation and Leaching of Arsenic Containing Dust with High-lead-zinc Content |
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Received:December 31, 2021
Revised:January 06, 2022
Accepted:January 14, 2022
Published Online:April 12, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.05.004 |
| KeyWord:lead smelting dust; pre-activation; leaching; zinc; arsenic |
| Author | Institution |
| SUN Hang-yu |
东北大学 |
| YANG Hong-ying |
东北大学 |
| WANG Zhi-peng |
东北大学 |
| ZHANG Qin |
东北大学 |
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| Abstract: |
| Aiming at complex and difficult-to-handle characteristics of high-lead-zinc containing arsenic dust from lead smelting furnace, a concentrated sulfuric acid pre-activation leaching process was used to recover lead and zinc and remove harmful elements such as arsenic and cadmium. Effects of various parameters in pre-activation and leaching process on leaching of fume were investigated. The results show that leaching rate of zinc, arsenic, cadmium, and lead is 98.64%, 95.02%, 95.26% and 0.16%, respectively under the optimum conditions including ratio of acid to dust of 1 mL/g, pre-activation temperature of 60 ℃, pre-activation time of 2 h, sulfuric acid concentration of 0.5 mol/L, L/S of 5 mL/g, leaching temperature of 80 ℃, leaching time of 2 h, and stirring speed of 400 r/min. |
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