Fuel contaminants. Volume 4. Application of oil agglomeration to coal wastes. Final report, August 1977-April 1978
The report gives results of a study of the application of oil agglomeration to coal wastes. There are an estimated 3000-5000 sizeable active and abandoned coal waste piles and impoundments in the eastern U.S. coal fields alone, containing 3 billion tons of refuse, part of which are slurry ponds. The impoundments, containing coal fines from coal preparation/cleaning plants, are a ready reserve of mined fuel for use in times of shortages. It appears that oil agglomeration could contribute significantly to the removal of contaminants before the conversion process is undertaken. The ability of agglomeration to dewater finely ground wet coal also suggests further incorporation of the process in any environmentally sound preparation plant supplying these conversion plants. Early studies indicated that, although agglomeration can effectively remove much of the ash forming minerals, it was unable to separate the liberated pyrite from coal. This program was undertaken to investigate several approaches, identified during the first phase, to enhance pyrite removal during agglomeration and to demonstrate the utility of the technology to reduce the environmental impact of increased quantities of coal cleaning refuse. Study results show that the coal recovered is of better quality than the coal now being shipped from the mine, in that sulfur and ash values are lower. Coal value recoveries were greater than 90%.
- Research Organization:
- Battelle Columbus Labs., OH (USA)
- OSTI ID:
- 5769598
- Report Number(s):
- PB-293210
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010800* -- Coal
Lignite
& Peat-- Waste Management
AGGLOMERATION
AIR POLLUTION
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL MINES
COAL PREPARATION
COMMINUTION
DESULFURIZATION
DISPERSIONS
ENERGY SOURCES
FEASIBILITY STUDIES
FOSSIL FUELS
FUEL SLURRIES
FUELS
IRON COMPOUNDS
IRON SULFIDES
MANAGEMENT
MINERALS
MINES
MIXTURES
ORES
POLLUTION
PROCESSING
PYRITE
PYRITES
REMOVAL
RESIDUES
SLURRIES
SOLID WASTES
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
SUSPENSIONS
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER REMOVAL