东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (8): 1155-1160.DOI: 10.12068/j.issn.1005-3026.2014.08.021

• 材料与冶金 • 上一篇    下一篇

COREX用煤成焦的高温性能研究

刘起航1,2，吴铿1,2，湛文龙1,2，任海亮1,2   

  1. (1 北京科技大学 冶金与生态工程学院， 北京100083; 2 北京科技大学 钢铁冶金新技术国家重点实验室， 北京100083)
  • 收稿日期:2013-09-26 修回日期:2013-09-26 出版日期:2014-08-15 发布日期:2014-04-11
  • 通讯作者: 刘起航
  • 作者简介:刘起航(1989-)，男，湖北襄阳人，北京科技大学博士研究生；吴铿(1951-)，男，辽宁鞍山人，北京科技大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(50934007，50874129)；国家高技术研究发展计划项目(2009AA06Z105).

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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摘要： 通过观察COREX块煤在成焦过程中所形成的不同煤焦的微观结构及形貌，分析了COREX所用两种煤成焦结构及性能的特点.借鉴高炉焦炭反应性及反应后强度的定义，提出以MCRI和MCSR来表示煤焦的反应性及反应后强度，并给出其物理意义.MCRI与MCSR主要是由煤焦显微结构的组成决定的.针对COREX所用的两种煤，对1100℃下不同成焦时间的煤焦反应性及反应后强度与微观结构进行多元线性回归，建立了预测COREX用煤成焦时煤焦热态性能的公式.由此推算了两种煤在600，800及1000℃条件下不同成焦时间的煤焦反应性及反应后强度，与实测值比较吻合.

关键词: 块煤, 煤焦, 熔融还原, COREX, 微观结构, 热态性能

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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