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Mineral matter effects on air-oxidation of cokes from a coking coal

✍ Scribed by Asao Ōya; Kazumasa Akuzawa; Sugio Ōtani

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
567 KB
Volume
63
Category
Article
ISSN
0016-2361

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✦ Synopsis

Indigenous mineral matter in coal affects the chemical reactivity of resulting cokes through both catalytic graphitization and catalytic gasification. The significance of both catalytic effects on air-oxidation was examined using cokes from a medium-volatile bituminous coking coal with 9 wt% mineral matter. Catalytic graphitization by mineral matter enhanced the reactivity of the resulting coke in spite of the formation of highly crystalline carbons. This effect, however, was less than that of catalytic gasification by mineral matter. The coke from the acid-treated predemineralized coal exhibited no catalytic effects but was the most reactive. The implications of these results are discussed in detail.

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