Interaction between surface and substance of copper sulfide ore

December 05, 2024

Sun Wei et al quantum chemical calculation software GW03 and xanthan FUJISTUCACHe acid esters, the nature of HOMO energy ethoxycarbonyl sulfur amino sugars frontier orbital brass mineral collector agents, pharmaceutical composition and shape of the HOMO density HOMO atoms, The relationship between these quantitative parameters and drug selectivity was studied by combining the flotation results of these two types of agents, and the feasibility of these parameters as a criterion for selecting chalcopyrite collectors was discussed. The results show that for the same type of collector, the selectivity is linear with HOMO energy. According to HOMO energy, the selectivity of the two collectors can be accurately predicted. For different kinds of collectors, The HOMO shape and the discussion of the HOMO density of the constituent atoms show that the ethoxycarbonyl thiourethane collector has a higher selectivity than the xanthate formate collector. Therefore, these three parameters can be combined to evaluate the selectivity of the chalcopyrite collector.

Zhao Cuihua et al. used density functional theory to study the adsorption of water on the surface of copper sulfide minerals and the natural floatability of copper sulfide minerals. To rule out the effects of oxygen and other factors, all calculation models were built in a vacuum environment. The results show that the chalcopyrite is hydrophobic and naturally floatable.

Deng Jiu-shuai and Wen Ming and others have revealed that copper ions also have adsorption behavior on the surface of chalcopyrite by means of Zeta potential analysis, X-ray photoelectron spectroscopy, copper ion adsorption test, first-principles calculation and Hallimond flotation test. Ions also have an activation effect on chalcopyrite, the main cause of which is the interaction of copper ions with the surface-activated sulfur, thereby increasing hydrophobicity. This adsorption is beneficial to the flotation of the chalcopyrite itself under certain conditions. Copper ions floating mineral slurry mainly from chalcopyrite surface oxidation and the dissolution of the release of fluid inclusions in minerals, the presence of these ions and the adsorption make chalcopyrite having self-activating properties.

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