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Effect of Indian Medium Coking Coal on Coke Quality in Non-recovery Stamp Charged Coke Oven 被引量:3
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作者 H.P.Tiwari P.K.Banerjee +1 位作者 V.K.Saxena S.K.Haldar 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2014年第7期673-678,共6页
The maximum possibility of utilizing the Indian coking coals and inferior grade coking coal for producing metallurgical coke through non-recovery stamp charging tech_nology was investigated. Indian indigenous coals co... The maximum possibility of utilizing the Indian coking coals and inferior grade coking coal for producing metallurgical coke through non-recovery stamp charging tech_nology was investigated. Indian indigenous coals contained low percent of vitrinite (〈50%) and higher content of ash (〉15%) compared to imported coking coal. Therefore, the selection of appropriate proportion of different types of coals was a major challenge for coke makers. Coal blend selection criterion based on a single coefficient, named as composite coking potential (CCP), was developed. The use of increased proportion of semi-soft coal (crucible swelling number of 2.5) and high ash (≥15%) indigenous coal in the range of 20%- 35% and 20%-65% respectively in the blends resulted in good quality of coke. Plant data of a non recovery coke oven were used for developing and validating the model. The results showed that the coke strength after reaction (CSR) varied in the range of 63.7%-67.7% and the M40 value was between 81.8 and 89.3 in both the cases. 展开更多
关键词 Indian coking coal imported coking coal CCP CSR M40 non-recovery stamp charged coke making
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