S K Kawatra's Beneficiation of phosphate ore PDF

By S K Kawatra

ISBN-10: 0873353919

ISBN-13: 9780873353915

ISBN-10: 0873353927

ISBN-13: 9780873353922

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Conversely, when the gangue mineral is floated from the desired mineral, it is referred to as “reverse” flotation. Flotation plants are usually set up as a circuit consisting of several flotation stages. 11 shows a basic rougher−scavenger−cleaner flotation circuit. The purpose of the scavenger is to recover any valuable mineral that may not have been recovered during rougher flotation. The cleaner is used to remove any gangue mineral that may have reported to the froth concentrate during rougher flotation.

08 cm). The coarse +2 inch size fraction is sent to the tailings, while the −2 inch fraction is sent to a ball mill and then back to the first trommel screen. The –½ inch size fraction passing the first trommel screen is then sent through a series of vibratory screens and log washers. The log washers vigorously agitate the slurry to wash it of clay slimes. The clay slimes from the log washers are sent to clay settling ponds. The clays settling ponds are also a source for wash water that is used in the log-washing stages.

14 shows the surface energies and contact angle for a system consisting of an air bubble on a solid surface in a liquid medium. Contact angle measurements are typically made using the liquid drop on a solid surface system due to ease of use. 1. 2) gives the DG associated with liquid−solid interface replacing the liquid−gas interface. 3). This equation shows that an increase in contact angle corresponds to an increase in hydrophobicity of the solid surface (Adamson 1990; Wills and Napier-Munn 2006; Fuerstenau and Raghaven 2007).

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Beneficiation of phosphate ore by S K Kawatra


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