Coking Property Difference Between Canada Coals and Some Domestic Coking Coals
ZHANG Dai-lin1， WANG Wei1， WANG Kun1， HUANG Da-zhong1，LI Wei-feng2， ZHENG Ming-dong1
（1. Anhui Key Laboratory of Coal Clean Conversion and Utlization, Anhui University of Technology, Ma’anshan 243002, Anhui, China 2. Pingmei Shenma Group Shoushan Coking Co., Ltd., Xuchang 452670, Henan, China）
Abstract：It was benefit for domestic coking enterprise to make good use of Canada coals and optimizing coal blending, by studied the difference of caking property between Canada coals and main domestic coking coals. To explore the reason of differences of caking property of these coals, the conventional coal quality and petrography analysis of these coals was studied and test Canada coals replace domestic high quality coking coals by 40 kg poilt coke oven test. The result showed that: compared with the domestic coking coals, ash content and metamorphism degree of Canada coals was lower, and it has good singleness; Canada coals has lower Giseeler fluidity lgMF and AoYa dilatation [b] value, there was less homogeneous vitrinite in it, and it had more crack and pore in vitrinite maceral, which make lower fluidity and expansion pressure in melting stage of coking process; Canada coals can replace domestic high-quality coking coals for coking, and can stabilize the coke quality.
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2014, Vol. 49 
