Laboratory scale separation of coal macerals
A laboratory scale procedure for separation of the maceral constituents of coal has been developed. This procedure is a modification and scale-up of our earlier density gradient centrifugation method. The technique enables us to separate larger quantities and to obtain higher density resoltuions of individual coal macerals than was previously possible. The procedure involves an intiial sink-float separation on finely ground chemically demineralized coal using a high speed centrifuge to obtain large quantities of single maceral groups (i.e., exinite, vitrinite, or inertinite). The maceral concentrate, 15 to 20 g in quantity, rather than the entire coal serves as the feed for the DGC separation. Efforts to apply continuous centrifugation techniques as an alternative to the sink-float separation to concentrate maceral groups were only partially sucessful. 8 figures, 3 tables.
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 6146558
- Report Number(s):
- CONF-810520-
- Journal Information:
- Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 16:10; ISSN SSTED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CENTRIFUGATION
COAL
DENSITY
ENERGY SOURCES
FOSSIL FUELS
FUELS
MACERALS
MATERIALS
PHYSICAL PROPERTIES
SEPARATION PROCESSES