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The effect of frothers on the degree of entrainment is important for selective flotation, but the mechanism underpinning the effect is still poorly understood. In this study, gangue only batch flotation tests were performed using fully liberated quartz in a 3.5L conventional Agitair flotation cell, and the degree of entrainment was assessed at different frother concentrations using Dowfroth 250 and...
Passive acoustic emission monitoring was used to study the role of solid particles on bubble coalescence. The effect of 1–10% w/w talc (hydrophobic) or silica (hydrophilic) particles on air bubble formation and coalescence at a capillary in the presence of MIBC or sodium chloride was determined. Both solids slightly inhibited bubble coalescence while silica created a larger region of partial coalescence...
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