Study on Ultrasonically-Enhanced Deep Eutectic Solvents Leaching of Zinc from Zinc-Containing Metallurgical Dust Sludge

In this study, the zinc containing dust and sludge of iron steel smelting was taken as research object, new ionic liquid choline-urea prepared synthesized leaching agent. The conventional ultrasonic were compared, influence liquid-solid ratio, temperature, time, power other conditions on rate analyzed. residue characterized by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), X-ray diffraction (XRD), kinetic equations ligand based ultrasonically enhanced metallurgical constructed. results showed that choline chloride-urea has a special solubilization ability for ZnO, Zn at temperature 60 °C, 350 W, time 240 min reached more than 98%. Kinetic fitting ChCl-urea process revealed in accordance with nucleation contraction model under both conditions, dominated interfacial mass transfer solid film layer diffusion control reactions, respectively. activation energies Ea1 = 44.56 kJ/mol Ea2 23.06 kJ/mol.