| Summary: | In coal slime flotation,both the contacting and adsorption between the reagents and coal particles,and the mineralization of particles and bubbles are the key influence factors.In this paper,the collision frequency formulas of particles in turbulent flow field,the formulas of the probability of collision,the probability of adhesion,the probability of stripping and the formulas which derived from the former ones were used to deduce the influence of energy intensity and size compositions on flotation process in theory.Laboratory tests were conducted to verify the influence of energy intensity on reagents adsorption and the flotation efficiency.The results showed that the increase of energy intensity could effectively increase the reagents adsorption of coal particle. In theory,the decrease of particles size could improve the mineralization probabilities of particles and bubbles,but extremely small size of the particles may worsen the flotation process. The increase of energy intensity could reduce the lower limit of particles size in flotation and effectively improve the flotation efficiency of fine coal particles.
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