Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1989-04-04
1990-02-27
Lacey, David L.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209 5, B03D 102, B03D 108
Patent
active
049043730
ABSTRACT:
disclosed is a process for separating resin from a mixture of resin-bearing coal particles by increasing the pH of a froth flotation process to a value of at least 12. Particles of reduced size resin-bearing coal are preferably mixed with water to from a slurry. The pH of the slurry is then adjusted with a chemical agent to about 12. The slurry is then subjected to froth flotation. The coal particles aggregate to one another allowing the remaining resin-rich particles to attach to the bubbles formed during the flotation process. A much improved separation efficiency for resin flotation from coal is observed.
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Miller Jan D.
Yi Ye
Yu Qiang
Lacey David L.
Lithgow Thomas M.
University of Utah
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