Abstract

Under laboratory conditions, studies were carried out to determine the hydrophobicity of the surface of copper sulfide minerals bornite and chalcopyrite by differential thermal analysis and the infrared (IR) spectra of samples of these minerals were studied before and after the experiments. From the nature of the absorption of copper sulfide minerals by IR radiation, it is possible to determine the best indicators of the adsorption of reagents on the surface of minerals. When treating the chalcopyrite surface with anabazinium-O, O-dimethylthiophosphate and N-phenylthiosemicarbazide reagents N-morpholinylacetic acid has been found to weaken hydrogen bonds and evaporate adsorbed moisture. This indicates an increase in the hydrophobicity of the chalcopyrite surface compared to bornite. Studies of the non-soil flotation of the monomineral fraction of sulfide minerals were carried out in the Hallimond tube. During flotation of chalcopyrite treated with a solution of 1% N-phenylthiosemicarbazide of N-morpholinyl acetic acid, its extraction was 94.54%. The achieved indicators are confirmed by the results of differential thermal analysis and IR spectroscopy

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