Application of coal petrography to the evaluation of magnetically separated dry crushed coals
Conference
·
OSTI ID:6589050
In the present study the open gradient magnetic separation method has been used to beneficiate the -30 + 100 mesh fraction of two high volatile bituminous coals. The evaluation of the effectiveness of the magnetic separation for cleaning these coals is the subject of this paper. Coal petrography in combination with scanning electron microscopy and x-ray diffractometry were used to characterize the magnetically separated coal fractions. These analyses revealed that the majority of the pyrite and non-pyrite minerals were concentrated in the positive magnetic susceptibility fractions. The bulk of the starting samples (approx. 80 weight percent) were located in the negative magnetic susceptibility fractions and showed significant reductions in pyrite and non-pyritic minerals. The magnetic separation appears to effectively split the samples into relatively clean coal and refuse.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6589050
- Report Number(s):
- CONF-810203-7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COAL PREPARATION
COHERENT SCATTERING
COMMINUTION
CONCENTRATORS
DIFFRACTION
ELECTRON MICROSCOPY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGY
IRON COMPOUNDS
IRON SULFIDES
MAGNETIC PROPERTIES
MAGNETIC SEPARATORS
MAGNETIC SUSCEPTIBILITY
MATERIALS
MICROSCOPY
MINERALS
ORES
PERFORMANCE
PETROLOGY
PHYSICAL PROPERTIES
PYRITE
PYRITES
SCATTERING
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COAL PREPARATION
COHERENT SCATTERING
COMMINUTION
CONCENTRATORS
DIFFRACTION
ELECTRON MICROSCOPY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGY
IRON COMPOUNDS
IRON SULFIDES
MAGNETIC PROPERTIES
MAGNETIC SEPARATORS
MAGNETIC SUSCEPTIBILITY
MATERIALS
MICROSCOPY
MINERALS
ORES
PERFORMANCE
PETROLOGY
PHYSICAL PROPERTIES
PYRITE
PYRITES
SCATTERING
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION