SELECTIVE REMOVAL OF COPPER-ZINC-ARSENIC IONS FROM AQUEOUS SOLUTIONS WITH FLOTATION TECHNIQUES
Abstract
THE SCOPE OF THIS WORK IS TO INVESTIGATE THE FEASIBILITY OF THE SELECTIVE SEPARATION OF COPPER, ZINC AND ARSENIC IONS FROM DILUTE AQUEOUS SOLUTIONS USING FLOTATION TECHNIQUES. THE FLOTATION TECHNIQUES USED WERE: ION FLOTATION, PRECIPITATE FLOTATION AND ADSORBING COLLOID FLOTATION. THE CONTINUOUS FLOW EXPERIMENTS WERE CONDUCTED BY DISPERSED-AIR IN A FLOTATION COLUMN. THE BATCH EXPERIMENTS WERECARRIED OUT WITH DISSOLVED-AIR JARS. THE SELECTIVE SEPARATION WAS SUCCESSFULLYACHIEVED BY SELECTIVE PRECIPITATION FOLLOWED BY FLOTATION. THE SELECTIVE PRECIPITANTS WERE: SODIUM SULFIDE, XANTHATE SALT AND DITHIO-CARBONATE SALT.
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