Flotation interface chemistry

Interfacial chemistry is the science of studying the characteristics of surfaces in a multiphase system and the physical and chemical processes and their laws occurring on the surface. Mineral flotation is to use the difference of physical and chemical properties of the mineral surface, to increase the difference in wettability between materials by adding a specific flotation agent, and selectively enrich one or several materials of interest to achieve gangue minerals. A separation technique for separation, which is done in a solid-liquid three-phase system. The interface chemistry in the system mainly includes the changes of mineral surface properties, the interaction between minerals and agents, and the interaction between mineral particles in different flotation systems .

Solid-liquid-gas interface interaction in flotation system: The solid-liquid interface interaction is mainly the interaction between minerals and gangue minerals and water, involving the interfacial interaction between minerals and water, and mineral surface hydration. Characterization of factors such as film thickness and changes in mineral surface properties; liquid-liquid interface interactions are mainly interactions between flotation agents and water; solid-solid interface interactions refer to interactions between mineral particles and particles; The interaction of the gas interface is related to the interfacial interaction between minerals and gangue minerals in the aqueous phase and the bubbles; the interfacial interaction between the mineral and the flotation agent is related to the adsorption mode, adsorption strength and selectivity of the flotation reagent. That is, the mechanism of action.

Flotation interface chemistry is the basis and prerequisite for efficient separation of complex minerals. The progress made in flotation interface chemistry in recent years is reviewed.

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