不同粒度气煤和瘦煤参与配煤炼焦比较  

COMPARING ON THE DIFFERENT SIZE OF GAS COAL AND LEAN COAL USED INTO COKING-BLENDING

作　　者：项茹[1] 薛改凤[1] 张雪红[1] 陈鹏[1] 

机构地区：[1]武汉钢铁(集团)公司研究院,武汉工程师430080

出　　处：《煤炭转化》2010年第3期59-62,共4页Coal Conversion

摘　　要：通过对气煤瘦煤煤质特征、胶质层测试后焦块形貌和焦炭光学组织进行比较,表明气煤与瘦煤成焦惰性结构高,配煤炼焦中起瘦化作用,但气煤瘦煤的结焦特性完全不同,气煤的反应活性较瘦煤高.通过对不同粒度气煤瘦煤自黏结强度和成焦显微结构特征进一步比较,表明气煤参与配煤炼焦粒度不宜过大,也不宜过小,应控制合理范围,利于焦炭质量提高;瘦煤参与配煤炼焦,应通过适度地细粉碎,利于焦炭质量提高.By comparing quality of gas coal and lean coal, the coke block pattern of plastometer index and optical texture of coke, it showed the inert structure was high coked from gas coal and lean coal, which can make the blend coal thin. But the coking capacity of them was completely different, comparison of micro-structure of coke formation of single kind of coal, the reactivity of gas coal was higher. The Self-caking intensity and the coke microstructure were further compared, the results indicates the grain size of gas coal cannot oversize and also cannot undersize, it should be controlled in the reasonable size, which can improve coke quality when it participated in blending. The coke quality also can be improved by reasonable comminuting lean coal.

关 键 词：气煤 瘦煤 炼焦 细粉碎 粒度 

分 类 号：TQ520.62[化学工程—煤化学工程]