Аңдатпа
t. The present research on chalcopyrite leaching with glycine and lysine solutions in an alkaline medium in the presence of hydrogen peroxide and sodium hypochlorite was carried out at atmospheric pressure and temperature. The aim of glycine and lysine leaching is achieved due to the complexation of copper (II) glycinates and lysinates, as most of these amino acids exist as anions in an alkaline medium. The initial mineral and the leached chalcopyrite residues were analyzed by such physical and chemical methods as energy dispersive spectroscopy, X-ray phase analysis, and infrared spectroscopy. The concentration of metals in solutions after leaching was studied using atomic absorption spectroscopy. Results of chalcopyrite leaching at 25°С indicate the efficiency of alkaline glycine and lysine solutions in the presence of hydrogen peroxide, in which the extraction degree was 3.95% and 1.62% of copper, respectively