Method for processing raw coal
A method and apparatus for beneficiating crushed raw coal comprising: cleaning the crushed coal in bulk in cyclone separators using only water as a cleaning medium and obtaining a product of wet clean coal and wet reject material and also a stream of effluent; drying said wet clean coal and wet reject material by agglomerating after the addition of a small amont of oil and then centrifuging to obtain a product of clean dry coal and solid reject material and also a stream of effluent; treating the effluent stream from the cleaning step and the effluent stream from the drying step by means of flocculation to recover a product of coal and reject sludge which is returned to pass through the drying step again; and thus obtain clean water which is recycled and applied to the input of the cyclones in the cleaning step.
- Assignee:
- Canadian Patents and Development Ltd.
- Patent Number(s):
- US 4133747
- OSTI ID:
- 6459134
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
AGGLOMERATION
CARBONACEOUS MATERIALS
CENTRIFUGATION
CLEANING
COAL
COAL PREPARATION
COMMINUTION
CONCENTRATORS
CYCLONE SEPARATORS
ENERGY SOURCES
EQUIPMENT
FLOCCULATION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INERTIAL SEPARATORS
LIQUID WASTES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
PRECIPITATION
RECYCLING
SEPARATION PROCESSES
WASHING
WASTE WATER
WASTES
WATER