Journal of Northeastern University(Natural Science)

Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (8): 1155-1160.DOI: 10.12068/j.issn.1005-3026.2014.08.021

• Materials & Metallurgy • Previous Articles     Next Articles

High Temperature Performance of Coke Formed from COREX Coal

LIU Qihang1,2， WU Keng1,2， ZHAN Wenlong1,2， REN Hailiang1,2   

  1. 1 School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083，China; 2 State Key Laboratory of Advanced Metallurgy， University of Science and Technology Beijing， Beijing 100083， China.
  • Received:2013-09-26 Revised:2013-09-26 Online:2014-08-15 Published:2014-04-11
  • Contact: WU Keng
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Abstract: By observing different coal char’s microstructures and microscopic morphologies during the coking process， the characteristics of COREX coal char’s microstructure and properties were analyzed. MCRI and MCSR were used to describe the reactivity and the strength after reaction of coal char respectively， with those of BF’s coke for reference， then the physical meaning of MCRI and MCSR were given. MCRI and MCSR were determined by the composition of coal char. For the two kinds of COREX coal， the formula to forecast the hot performance of coal char was set up by making a multiple linear regression between the hot performance and microstructure of the coal char at 1100℃， and the predictive values of coal char’s hot performance at 600， 800 and 1000℃ coincided well with the measured values.

Key words: lump coal, coal char, smelting reduction, COREX, microstructure, hot performance

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