Abstract
It is shown that since the flow characteristics of bubbles are dissimilar to those of solids in flotation columns, the gas-liquid drift-flux, J g1, is significantly different from the solid-liquid drift-flux, J s1, in two-phase systems. This is attributed to the fact that unlike the motion of solid spheres in water, the ascent of bubbles is influenced by their virtual mass, arrangement in a swarm, and most importantly, the presence of surfactants which are required in column flotation operations.
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