TY - JOUR
T1 - Coking technology using heavy oil residue and hyper coal
AU - Sekine, Yasushi
AU - Sumomozawa, Fumitaka
AU - Shishido, Takahiro
N1 - Publisher Copyright:
© 2014 ISIJ.
PY - 2014
Y1 - 2014
N2 - Oil sand bitumen and hypercoal are examined as a caking additives to the mixture of strongly coking coal and non-slightly coking coal. Samples were coked, then their strength, crystallinity of the carbon structure, and an anisotropic microstructure were measured. Oil sand bitumen addition enhanced strength, but 15% addition caused a strength decline because of the formation of large pores and cracks. Hypercoal addition increased strength with increased its content. Correlation was observed between increased strength and the crystallinity of a carbon structure or the anisotropic microstructure. Results suggest that mutual melting occurred between a coal blend and a caking additive. Then the caking additive took a carbon structure with high crystallinity by coking, achieved a function as a binder material that connects coal-particle interfaces, and ultimately enhanced strength.
AB - Oil sand bitumen and hypercoal are examined as a caking additives to the mixture of strongly coking coal and non-slightly coking coal. Samples were coked, then their strength, crystallinity of the carbon structure, and an anisotropic microstructure were measured. Oil sand bitumen addition enhanced strength, but 15% addition caused a strength decline because of the formation of large pores and cracks. Hypercoal addition increased strength with increased its content. Correlation was observed between increased strength and the crystallinity of a carbon structure or the anisotropic microstructure. Results suggest that mutual melting occurred between a coal blend and a caking additive. Then the caking additive took a carbon structure with high crystallinity by coking, achieved a function as a binder material that connects coal-particle interfaces, and ultimately enhanced strength.
KW - Caking additive
KW - Coking
KW - Hypercoal
KW - Oil sand bitumen
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U2 - 10.2355/isijinternational.54.2446
DO - 10.2355/isijinternational.54.2446
M3 - Article
AN - SCOPUS:84917694480
SN - 0915-1559
VL - 54
SP - 2446
EP - 2453
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
IS - 11
ER -