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- W202313165 abstract "Publisher SummaryThis chapter presents the principles of flotation and characteristics. Flotation is a physico-chemical separation process that utilizes the difference in surface properties of the valuable minerals and the unwanted gangue minerals. The theory of froth flotation is complex, involving three phases—solids, water, and froth-with many sub-processes and interactions, and it is not completely understood. In flotation concentration, the mineral is usually transferred to the froth, or float fraction, leaving the gangue in the pulp or tailing. This is direct flotation and the opposite is reverse flotation, in which the gangue is separated into the float fraction. Flotation is undoubtedly the most important and versatile mineral processing technique, and both its use and application are continually being expanded to treat greater tonnages and to cover new areas. Flotation has permitted the mining of low-grade and complex ore bodies that would have otherwise been regarded as uneconomic. In earlier practice, the tailings of many gravity plants were of a higher grade than the ore treated in many modern flotation plants. Flotation is a selective process and can be used to achieve specific separations from complex ores such as lead-zinc and copper-zinc. Initially developed to treat the sulphides of copper, lead, and zinc, the field of flotation has now expanded to include platinum; nickel; gold-hosting sulphides; and oxides such as hematite and cassiterite; oxidized minerals such as malachite and cerussite; and non-metallic ores such as fluorite, phosphates, and fine coal. The chapter also explains roles of collectors, frothers, regulators, activators, depressants, and the processes such as bubble generation and froth performance." @default.
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- W202313165 date "2005-01-01" @default.
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- W202313165 title "Froth flotation" @default.
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