Copper sulfide ore flotation and microbubble flotation

Magnetic treatment can change the physicochemical properties of the aqueous solution, change the selectivity of the agent and mineral surface, increase the adsorption capacity of the collector on the mineral surface, and thus improve the flotation index.

The effects of wind CUI field strength, the magnetization of magnetic treatment time and other conditions for the flotation of copper sulfide ore thermodynamic magnetization, electrochemical (cyclic voltammetry, Tafel curve) and the spectrum (UV, IR) systems and other research tools The optimal process conditions of magnetization flotation were determined, and the internal mechanism and law of magnetic treatment affecting mineral flotation were explored from the perspective of physical action and chemical action. The new process of magnetic treatment flotation of actual ore shows that magnetic treatment is beneficial to the floating of copper minerals, and the recovery rate is increased by 1% to 3% compared with the conventional flotation process. The water system magnetization treatment can cause changes in the properties of the water and the solution system, such as absorbance, pH value, dissolved oxygen amount, and electrical conductivity. After the magnetic treatment of the water and the chemical solution, the absorbance of the xanthate increases, and the magnetic treatment is beneficial to the chemical reaction such as hydrolysis and ionization of the xanthate, and the magnetization treatment increases the dissolved oxygen in the water and the solution system, and promotes the xanthate. Oxidative decomposition, electrolytes increase, the number of freely moving ions increases, the mobility increases, and the pH and conductivity of the solution increase. Electrochemical test studies have shown that magnetic treatment can promote the auto-oxidation of minerals and form hydrophobic products on the surface, which promotes the enhancement of the peak oxidation of hydrophobic substances on the electrode surface.

The low collision efficiency between foam and mineral particles is one of the main reasons why fine ore particles are difficult to float. Ahmadi et al. studied the effects of nanobubbles and microbubbles on flotation of fine-grained grades (-38 μm + 14.36 μm) and fine-grained grades (-14.36 μm + 5 μn) of chalcopyrite particles. The size distribution and stability of nano- and micro-bubbles were studied. The effect of foaming agent concentration on bubble size was studied by laser scattering method. The results showed that the average size of nano-bubbles became smaller with time, with foaming. The concentration of the agent decreases and decreases. Laboratory flotation indicators show that in the presence of nano-microbubbles, the recovery of fine-grained chalcopyrite is increased by 16% to 21%. The presence of nano-microbubbles increases the recovery of fine-grained grades, which is superior to (-38 μm + 14.36 μm) for (-14.36 μm + 5 μm). At the same time, nano-microbubbles can reduce the amount of collector by 75% and the amount of foaming agent by 50%.

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