Selective resin flotation from coal by controlled oxidation
This patent describes a method for separating resin from minute particles of resin-bearing coal, wherein at least some of the minute particles have a significant resinous portion, and are of a size suitable for forming a slurry with water, comprising; adding water to the minute particles so as to form a minute particle-water slurry; treating the minute particle-water slurry with ozone for a sufficient amount of time to increase the difference in hydrophobicities of the resin and coal particles; adding a suitable frothing agent to the minute particle-water slurry; and frothing the minute particle-water slurry so as to form bubbles which attach to the resinous portion of the minute particles containing a resinous portion and transport the resinous portion to a froth which floats on the water.
- Assignee:
- Univ. of Utah, Salt Lake City, UT
- Patent Number(s):
- US 4724071
- OSTI ID:
- 5340801
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
ADDITIVES
CHEMICAL REACTIONS
COAL FINES
COAL PREPARATION
DISPERSIONS
FLOTATION
FUEL SLURRIES
FUELS
HYDROGEN COMPOUNDS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDATION
OXIDIZERS
OXYGEN COMPOUNDS
OZONE
PARTICLE SIZE
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
REMOVAL
RESINS
SEPARATION PROCESSES
SIZE
SLURRIES
SUSPENSIONS
WATER