Abstract
For a hydrodynamic approach to the flotation process, the collision of particles with air bubbles in fllotation cells was studied in terms of the turbulent diffusion model and Kolmogoroff's theory. Comparison of the theoretical development and the experimental work resulted in the following conclusions:(1) the average diameter of air bubbles generated in the flotation cell is expressed by eq.(11).(2) the gas-liquid interfacial area in the flotation cell was measured using the method of CO2 absorption into the aqueous solution of NaOH to deduce eq.(18).(3) the rate constant of the collision is given by eq.(25) supposing that the dissipation energy in the cell varies proportionately with the agitation energy.(4) the flotation rate constant obtained from flotation tests is in accordance with eq.(25).(5) the appropriate agitation energy may be decided from the consideration of the rate constant given by eq.(27) oreq.(28) and the power consumption of the flotation cell.
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