Investigations of extraction separation of copper and zinc from secondary raw materials by means of tracer technique application

To obtain data for development of hydrometallurgy technology for copper and zinc extraction from ammoniac-carbonate solutions, produced during processing of secondary raw materials, laboratory investigations were done of equilibrium and kinetics of extraction of these metals by hydroximic extracting agents. In these investigations radioisotopes copper-64 and zinc-65 were used. Extracting agents LIX 64 N and 2-hidroxi-5-nonilebenzophenoxime with addition of aciloinoximes GOX 76 were used in investigations. Extraction was investigated with use of model and technological solutions, produces during processing of brass scrap in ammoniac-carbonate media. In the model solutions concentration of metals equals 10 g/dm3 for copper and 5 g/dm3 for zinc with pH = 10.8. In the technological solutions concentrations were nearly 2 times higher and pH - 9.6. Extracting agents were diluted by kerosine having anticorrosive properties. Concentration of extracting agents in the most of experiments was equal to 12 % weight. In the experiments on kinetics influence was determined of the time of phase contact on the magnitude of extracting ration for bouth metals. In investigations of equilibrium influence was determined of pH of aqueous phase and extracting agents concentrations on the selectivity of separation of these metals. Isotherms of extraction have been plotted. Influence of the kind diluent on effectivenness of copper and zinc extraction and selectivity of their separation was studied. Kinetics of equilibrium of the process of copper and zinc extraction agents by means of sulphuric acid sorption and mixture of copper sulphate with sulphuric acid were also investigated