Separation of silica from bauxite via froth flotation. Bittencourt, 1989, Bittencourt et al., 1990, aiming to obtain a gibbsite concentrate that could be used as raw material for the production of alumina refractories, tried direct flotation of the bauxite minerals from a Brazilian ore sample, composed basically of gibbsite (50 ), kaolinite (15 ) and quartz (35 ).Send Message Get Price
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