IMPROVED METHOD AND APPARATUS FOR FROTH FLOTATION IN A VESSEL WITH AGITATION
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United States of America Patent
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Issued Date -
Mar 15, 2012
app pub date -
May 26, 2009
filing date -
May 26, 2009
priority date (Note) -
Abandoned
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Abstract
A method of separating mixed particles in a flotation cell uses a fluidized bed within the cell where particles are fluidized in a quiescent zone by liquid moving upwardly through the fluidized bed. The fluidizing liquid may be provided by the feed or by recycling liquid from upper parts of the cell such as from the disengagement zone. Bubbles are introduced into the lower part of the cell through a mechanical impeller which also breaks up any channels in the mixing zone, or by separate aeration in the bottom of the cell or by introduction through a recycle pipe.
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