Analytical review of froth flotation processes, employed in hydrometallurgy and industrial sewage, and their classification are presented. Classification is based on physical-chemical (type of sublate phase in dilution volume, solubility and wettability of sublate) and processing (character of elementary flotation act and sublate formation method) features. Optimal areas for application of certain varieties of froth flotation in combined hydrometallurgical technologies and in industrial sewage treatment are recommended.
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