Cenospheres can have densities varying from 2.6 g/cm3 down to 0.2 g/cm3.
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Recovery potentials of cenospheres from two bituminous coal fly ashes were examined.
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Cenosphere contents were determined on the basis of point and area estimations.
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Separation efficiency was evaluated by yield, cenosphere content and cenosphere recovery.
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The most efficient cenosphere separation process was found to be wet sieving.
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