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| Study on Leaching of Zinc Oxide Dust with High Silicon and Low Germanium by Ultrasonic Coordination with Oxidant |
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Received:October 28, 2024
Revised:December 04, 2024
Accepted:December 06, 2024
Published Online:February 18, 2025
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| DOI：doi：10.20237/j.issn.1007-7545.2025.02.012 |
| KeyWord:Ultrasonic synergistic oxidant; High silicon low germanium zinc oxide dust; Hydrogen peroxide; Leaching efficiency |
| Author | Institution |
| FU Guang |
云南驰宏锌锗股份有限公司 |
| WEI Jie |
昆明理工大学 |
| LU Zhanqing |
云南驰宏锌锗股份有限公司 |
| PEI Yunfei |
云南驰宏锌锗股份有限公司 |
| LIANG Chen |
昆明理工大学 |
| XU Yingjie |
昆明理工大学 |
| XIA Hongying |
昆明理工大学 |
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| Abstract: |
| The aim of this study is to improve the leaching efficiency of zinc and germanium in high silicon and low germanium zinc oxide dust by introducing ultrasonic co-oxidant. Hydrogen peroxide was used as the oxidizer. The initial sulfuric acid concentration, liquid-solid ratio, molar concentration ratio of H?O? to H?SO?, temperature, and ultrasonic power were optimized. The results showed that when the initial concentration of sulfuric acid was 1.8 M, the concentration ratio of hydrogen peroxide to sulfuric acid was 1:1, the liquid-solid mass ratio was 7, the leaching time was 60 min, the leaching temperature was 70 ℃, and the ultrasonic power was 300 W, the leaching rates of zinc and germanium reached the highest value, and the leaching rates of zinc and germanium were 98.16% and 86.14%, respectively. Compared with the conventional process without ultrasonic and hydrogen peroxide under the same conditions, the leaching rates of the two methods are increased by 14.66% and 17.37% respectively. In addition, the study also analyzed the reaction mechanism in the leaching process, which provided a theoretical basis for the subsequent process optimization. |
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