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超声协同氧化剂浸出高硅低锗氧化锌烟尘研究

Study on Leaching of Zinc Oxide Dust with High Silicon and Low Germanium by Ultrasonic Coordination with Oxidant

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在高硅低锗氧化锌烟尘浸出过程中引入超声波协同氧化剂强化浸出,旨在提高锌和锗的浸出效率.选用过氧化氢(H2O2)作为氧化剂,对硫酸初始浓度、液固比、H2O2 与H2SO4 浓度比、温度及超声波功率对锌、锗浸出率的影响规律进行研究.研究表明,在硫酸初始浓度1.8 mol/L、H2O2 与H2SO4 浓度比1∶1、液固体积质量比7 mL/g、浸出时间60 min、浸出温度70℃、超声波功率300 W的条件下,锌和锗的浸出率分别达到98.16%和86.14%.与相同条件下常规工艺相比,锌和锗浸出率分别提高了14.66%和17.37%.此外,分析了高硅低锗烟尘超声强化浸出过程中的反应机制,为工艺优化提供了理论基础.
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 H2O2 to H2SO4,temperature,and ultrasonic power were optimized.The results show that when the initial concentration of sulfuric acid was 1.8 mol/L,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.

ultrasonicoxidantsynergistic leachinghigh silicon low germanium zinc oxide dusthydrogen peroxide

付光、韦洁、陆占清、裴启飞、梁辰、徐英杰、夏洪应

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云南驰宏锌锗股份有限公司,云南 曲靖 655011

昆明理工大学 冶金与能源工程学院,昆明 650093

云南省特种冶金重点实验室,昆明 650093

超声 氧化剂 协同浸出 高硅低锗氧化锌烟尘 过氧化氢

2025

有色金属(冶炼部分)
北京矿冶研究总院

有色金属(冶炼部分)

北大核心
影响因子:1.344
ISSN:1007-7545
年,卷(期):2025.(2)