The influence of density and particles size of α-quartz and amorphous silica on flotation

Density is one of the effective parameters in the particles flotation. For heavier particles, gravity force is more than bubble - particle cohesion force and it increase the probability of separation of particle from bubble. In this research the effect of particles density on flotation were investigated by using sample α-quartz and amorphous silica with density of 2.67 and 2.2 g/m3 respectively. The result of flotation studies showed that in the size range of -250�µm with increasing of density the recovery of flotation decreases from 97.74% to 93.42%, whereas in the size range of -150흮µm this decrease of recovery is not noticeable. In the size range of -75 µm with increasing of the density recovery increased from 88.49% to 92.42%. The probability of detachment increases with an increase in particle size and density.