单煤炼焦焦炭反应性及反应后强度影响因素研究探讨

Study on Influencing Factors of Coke Reactivity and Post-reaction Strength of Single-coal Coking

为研究影响焦炭反应性及反应后强度的相关煤质因素,对山西地区50个炼焦煤煤样进行了单种煤40 kg小焦炉炼焦试验,分析了挥发分、黏结指数、胶质层最大厚度、镜质体平均最大反射率等对焦炭反应性及反应后强度的影响规律。结果表明,挥发分、镜质体平均最大反射率这类反映炼焦煤煤化程度的指标对焦炭反应性及反应后强度的影响较大,并具有一定的规律;黏结指数、胶质层指数与焦炭反应性及反应后强度的关系没有明显规律;另外,在判断炼焦煤炼焦后的焦炭热强度时,除了通常考虑的常规煤质指标外,还应该结合煤的混煤情况、碱金属含量、成因因素(包括煤岩组成、成煤经历等)、元素组成(比如氧元素的含量)等进行综合判断。

In order to study the relevant coal quality factors affecting the reactivity and post-reaction strength of coke,50 coking coal samples in Shanxi area were subjected to a single coal 40 kg small coke oven coking test.The effects of volatile,bond index,glial maximum thickness and mirror average maximum reflectance on coke reactivity and reaction strength are analyzed.