Physico-chemical fracturing and cleaning of coal

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5930318

Sapienza, R S; Slegeir, W A; Butcher, T; Healy, F

Mineral-matter content and the costs of grinding are major impediments to the use of coal-water slurries in existing fluid-fuel combustors. A process for the simultaneous cleaning and fracturing of a variety of coals is being explored at Brookhaven National Laboratory. This process entails exposing coal to a carbon dioxide-water solvent system under pressure. Substantial amounts of mineral matter are leached into the liquid phase, significantly lowering the concentrations of alkaline and alkaline earth metals; some of the silica- and alumina-containing minerals in the coal are also removed. The treated coal is more easily crushed than untreated coal and grindability data is reported. 15 references, 2 figures, 4 tables.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5930318
• Report Number(s): BNL-33539; CONF-831008-2; ON: DE83017583
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CLEANING
COAL
COAL PREPARATION
COMMINUTION
DATA
DISSOLUTION
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FOSSIL FUELS
FRACTURING
FUELS
GRINDING
HYDROGEN COMPOUNDS
INFORMATION
LEACHING
MACHINING
MATERIALS
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MINERALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
REMOVAL
SEPARATION PROCESSES
SOLVENT EXTRACTION
WATER