Hydrodynamic parameters have an important role in the flotation process. In this research, the effect of hydrodynamic parameters in the coarse particles flotation is investigated according to items below: (1) The effect of operational flotation parameters in the bubble size and rise velocity (2) The effect of dimensionless hydrodynamic parameters in the coarse particles flotation (Reynolds, Froude and Weber numbers) (3) The effect of air flow rate in the coarse particles flotation (4) The effect of bubble-particle interactions in the coarse particles flotation (bubble-particle collision and...