Abstract:In this study, a deep eutectic solvent was used as the leaching agent in a pilot study on the ultrasonic leaching of zinc from zinc-containing dust sludge. The impact of ultrasonic power, reaction time, solid-liquid ratio, temperature, and stirring rate was examined on the zinc leaching rate. The results showed that under the conditions of temperature 40°C, ultrasonic power 90 W, solid-liquid ratio 1:7, rotating speed 250 r/min, and leaching time 80 min, the ultrasonic leaching rate of zinc could reach 98.5%. Based on the leaching results, the kinetic equation of ultrasound-enhanced leaching was developed. In the kinetic analysis of ultrasonically enhanced leaching of Zn-containing dust sludge, the apparent activation energy of the reaction was 11.2 kJ/mol, indicating that the mixed solid product layer controls the ultrasonically enhanced leaching process.