Abstarct: The purpose of present research was to study the extractive behavior of copper from a real leaching solution using LIX 984N extractant, which is a combination of two extractants of aldoxime and ketoxime. For achieving this goal, firstly, the influence of important parameters including the leach solution pH, contact time, extractant concentration, stirring speed, extraction temperature and phase ratio were investigated and their optimum values were determined. The result indicated that the highest extraction percentage of copper and selectivity at ambient temperature with equal phase ratio was obtained in one step under conditions: pH= 2.5, contact time= 20 min, extractant concentration= 12.5 % (v/v) and stirring speed= 400 rpm. Then in next stage, the extraction mechanism and process thermodynamic was examined. The study of extraction mechanism confirmed that two moles of LIX 984N extractant were needed for the extraction of each mole of copper. Also, thermodynamic parameters showed that the extraction process was an endothermic (∆H=76.47 kJ/mol) and non-spontaneous (∆G=18.06 kJ/mol) process. Finally, the stripping process of copper from the loaded organic phase was caried out using sulfuric acid at the concentration of 90 to 180 g/L and the most stripping efficiency of copper (98.65 %) with equal phase ratio was achieved after two stripping stages at the acid concentration of 180 g/L and contact time of 10 min.