Graphitization of anthracite

Journal Article · Thu Sep 10 04:00:00 EDT 1981 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5434745

Kokurin, A D; Bukher, A B; Gorbatenko, E V; Soloveichik, E Ya

Far from all the residues from heat treatment of solid fossil fuels (cokes) or anthracites are graphitized to the same extent under conditions of homogeneous graphitization at temperatures of 2300-2700/sup 0/C. The resistance of carbon polymers to graphitization has been explained in various ways. The fact that not all coals can be graphitized, and not all give graphite of the same quality, is attributed by Veselovskii to the nature of coal, inherent in its supermolecular particulate structure. According to Franklin the graphitelike layers in nongraphitizing coals form small blocks during carbonization and graphitization; these blocks are randomly distributed and bonded together by strong side links preventing growth of graphite crystals. Kasatochkin suggested that these strong links consist of compounds of polyine and cumulene types. As we have shown the graphitizability carbonaceous polymers (cokes) obtained from liquid petroleum and tar products is determined by the structure, composition, and properties of the original hydrocarbons and their derivates, and by the conditions of their conversion (cabonizaton). Anthracites are the final products of the transformation of coals. It is usually stated that the subsequent state is formation of graphite. However, anthracites, like coals, are not all graphitized to an equal degree; this is due to their chemical nature and formation conditions. All coal, including anthracites, regardless of formation conditions and metamorphism, consist of the following petrographic components vitrain, clarain, durain, and fusain. The first two melt or soften on heating, fussain does not have these properties, while durain is a mixture of various microcomponents and its properties depend on their contents.

• OSTI ID: 5434745
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 54:3; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401* -- Coal & Coal Products-- Carbonization-- (-1987)
010500 -- Coal
Lignite
& Peat-- Products & By-Products
ANTHRACITE
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COAL
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GRAPHITIZATION
INFORMATION
MACERALS
MATERIALS
NUMERICAL DATA
QUANTITATIVE CHEMICAL ANALYSIS
STRUCTURE FACTORS