Copper anode slime is a typical hazardous waste that is rich in precious metals, rare metals and other valuable metals. Decopperization is the first step to recycle rare and precious metals from copper anode slime. In this work, the synergistic effect of ultrasound and ozone on copper leaching from copper anode slime was studied to develop an efficient and clean decopperization process. The effects of the reaction time, temperature, initial sulfuric acid concentration, ultrasound power and ozone flow rate were investigated. The results show that the dissolution fraction of copper can reach 98.46% under the optimum ultrasound and ozone reaction conditions. However, the leaching efficiency of copper under ozone is only 50.99% at 30 min. The kinetics analysis shows that the leaching reaction follows the classical unreacted-core shrinking model. The apparent Ea value and reaction orders were estimated to be 10.37 kJ/mol and 0.34, respectively. Meanwhile, the leaching kinetic equation under ultrasound and ozone was established using quadratic regression. Surface analyses indicated that the copper compound leached under ultrasound and ozone exposure. The higher leaching efficiency of copper results because copper and its compounds are transformed into soluble copper sulfate under the combination of ozone and ultrasound. The concentration of precious metals in the leaching residue under ultrasound and ozone is the highest, indicating that the synergistic effect of ultrasound and ozone can effectively enrich valuable precious metals. Synergistic decopperization from copper anode slime by ultrasound and ozone offers wide application prospects in transforming harmful anode slime waste into valuable materials.

铜阳极泥是一种典型的危险废物，富含贵金属、稀有金属和其他有价金属。脱铜是从铜阳极泥中回收稀贵金属的第一步。在这项工作中，研究了超声波和臭氧对从铜阳极泥中浸出铜的协同作用，以开发一种高效清洁的脱铜工艺。研究了反应时间、温度、初始硫酸浓度、超声功率和臭氧流速的影响。结果表明，在最佳超声和臭氧反应条件下，铜的溶解率可达98.46%。然而，臭氧下铜的浸出效率在 30 分钟时仅为 50.99%。动力学分析表明浸出反应遵循经典的未反应核心收缩模型。表观 Ea 值和反应级数估计分别为 10.37 kJ/mol 和 0.34。同时，利用二次回归建立了超声波和臭氧作用下的浸出动力学方程。表面分析表明铜化合物在超声波和臭氧暴露下浸出。铜的浸出效率更高，是因为铜及其化合物在臭氧和超声波的结合下转化为可溶性硫酸铜。超声和臭氧作用下浸出渣中贵金属浓度最高，说明超声和臭氧协同作用可有效富集有价贵金属。