Froth flotation method and an apparatus for extracting a valuable substance from a slurry
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United States of America Patent
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Jan 29, 2013
Grant Date -
Mar 29, 2012
app pub date -
Jun 3, 2010
filing date -
Jun 9, 2009
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Abstract
In a froth flotation method and apparatus an upwardly open circular trough (4) having outlets (5) on the outer periphery of the trough is arranged horizontally above the froth phase (F) so that the trough is coaxial with the flotation vessel (1), and said circular trough is rotated around its center axis. A stationary water pipe (6) is arranged above the trough (4). Fresh water (W) is fed via the water pipe (6) into the trough (4) while the trough is rotating, and the water is let to flow by gravity and centrifugal force from the trough (4) via the outlets (5) into the froth phase (F).
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