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Encyclopedia > Flotation

Flotation is a method for the separation of mixtures. Flotation is a separation technique used widely in the minerals industry, for paper, deinking, and water treatment amongst others. It can also be used in the food and coal industries. The technique relies upon differences in the surface properties of different particles to separate them. The particles that are to be floated are rendered hydrophobic by the addition of the appropriate chemicals. Air is then bubbled through the mixture and the desired particles become attached to the small air bubbles and move to the surface where they accumulate as a froth and are collected, or if the non-desired particles float to the surface they are collected and discarded. ...



Flotation is also used in archaeology to separate plant remains from soil. REED H Is awsome! ...


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Flotation swimsuit and method for construction thereof - Patent 6971935 (5372 words)
The flotation swimsuit of claim 2, further comprising a pair of rear retaining pockets to retain a pair of rear floatation elements, wherein the rear flotation elements comprise a layer of buoyant material of a first thickness and at least one enhanced buoyancy region having a thickness greater than the first thickness.
The flotation swimsuit of claim 9, wherein at least one of the pair of rear flotation elements comprises a flexion channel to permit the rear flotation elements to flex.
The flotation element of claim 12, wherein said at least one enhanced buoyancy region is a lower torso region to provide enhanced buoyancy of a lower portion of the user's torso relative to the buoyancy generally provided to the user's torso by the backsheet.
DISSOLVED AIR FLOTATION PROCESS (1123 words)
In the flotation process, the stream to be treated is saturated with air at several times atmospheric pressure.
The flotation process is employed where separation of particles having specific gravities close to that of water is desired.
A portion (generally 50% of raw flow) of the system effluent is pressurized and recycled to the flotation cell where it is blended with the raw wastewater flow.
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