Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1993-03-08
1994-03-15
Lithgow, Thomas M.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209169, 209170, 209166, B03D 102, B03D 124
Patent
active
052940039
ABSTRACT:
The invention relates to a flotation column including a plurality of controlled recycle chambers intentionally introduced into the column to cause the non-float fraction or gangue to drop down in the main float stream while the desired float fraction travels in the opposite direction by recycling to continually mix the pulp while coursing through the column. Recycle zones are positioned on the periphery of the main passage or flotation zone within chambers located in series along the column. A portion of the slurry is drawn into a recycle zone where it passes downwardly to return to the flotation zone or the main passage through the column to again be swept through the column.
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"Column Flotation" by Finche & Dobby, Pub. 1990, Rice Univ. Houston, Texas, pp. 59, 60, 65, 72, 73, 116, 124, 129, 131 and 132.
"Froth Flotation in Modern Coal Preparation Plants"-Mining Congress Journal-May 1964-R. Zimmerman-pp. 26-32.
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