Flotation process

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1.A process of separating the substances contained in pulverized ore or the like by depositing the mixture on the surface of a flowing liquid, the substances that are quickly wet readily overcoming the surface tension of the liquid and sinking, the others flowing off in a film or slime on the surface, though, perhaps, having a greater specific gravity than those that sink.
References in periodicals archive ?
upon which the froth-flotation process rests, is valid there is no longer any doubt," E&MJ reported.
Argonne has patented a froth-flotation process for separation of ABS and HIPS, which is the middling fraction left over after the lighter and heavier fractions have been removed by the sink/float method.