Abstract: In order to explore the behavior characteristics and kinetic mechanism of copper leaching by glycine，the effects of leaching temperature，glycine concentration and stirring speed on copper leaching behavior were systematically investigated，and the kinetic model of copper leaching by glycine was con⁃ structed. The results show that the leaching temperature and glycine concentration have a significant effect on the copper leaching rate and leaching frequency. Under the conditions of leaching temperature of 60 ℃， glycine concentration of 0.5 mol/L，stirring speed of 400 r/min and leaching time of 48 h，the leaching rate of copper is more than 99%. The leaching process conforms to the shrinking core model. The copper parti⁃ cles gradually dissolve from the outside to the inside，and the surface gradually becomes concave and rough from smooth and round，but still maintains a spherical profile. The kinetic analysis showed that the apparent activation energy of the reaction was 51.5 kJ/mol，which belonged to the chemical control process. The reac⁃ tion orders of glycine and stirring speed are 2.0 and 0.8，respectively. This study provides a theoretical basis for the clean and efficient recovery of copper resources in e-waste.

Key words: glycine, metal copper, leaching behavior, kinetic mechanism, shrinking core model