Explain the principle behind the Froth Flotation process.
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Froth flotation is based on the principle that sulfide ore particles are preferentially wetted by oil and attach to air bubbles that make them float to the surface as a froth, while the gangue particles are wetted by water and sink to the bottom. Collectors (like pine oil) stabilize the froth and depressors are used to prevent certain unwanted minerals from floating.
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