Process for cleaning fine coal
A process for the wet concentration and cleaning of fine coal is provided which comprises the steps of desliming and thickening a dilute slurry of fine coal and contaminant particles having a size of less than about 10 mm by introducing the same to a hydrocyclone separator to retain a slurry of particles having a size greater than about 0.1 mm, wet concentrating the last-named slurry and removing the heavier contaminant particles by introducing it to an autogenous dense medium separation vessel having a manifold for injecting water at an intermediate level and controlling the underflow of heavier than coal particles to maintain a fluidized bed of heavier particles and causing a slurry of the lighter coal particles to overflow, and concentrating and dewatering the overflow by means of a static or vibratory sizing screen.
- Assignee:
- Linatex Corp. of America
- Patent Number(s):
- US 4282088
- OSTI ID:
- 6162586
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CLEANING
COAL FINES
DISPERSIONS
FLUID INJECTION
FLUIDIZED BED
FUEL SLURRIES
FUELS
HYDROGEN COMPOUNDS
MIXTURES
OXYGEN COMPOUNDS
PARTICLE SIZE
REMOVAL
SCREENS
SEPARATION PROCESSES
SIZE
SLURRIES
SUSPENSIONS
WATER
WATER REMOVAL