长时间存放对不同变质程度肥煤结焦行为的影响

摘要

The caking index,plastometric indices,Gieseler fluidity,Arnu-Audibert's dilatometer of different fat coal after long time storage were studied. The result showed that plastometric indices were without obvious change,and caking index,Gieseler fluidity,Arnu-Audibert's dilatometer descended,Gieseler fluidity under different temperature moved to lower temperature areas,the rank of fat coal was lower,and the descending range decreased more obviously after long storage time. After long-time turnaround and transport,Gieseler fluidity,Arnu-Audibert's dilatometer should be tested to make sure fat coal's function is well,and fat coal should be rationally blended.%通过对长时间堆放后不同变质程度肥煤粘结指数、胶质层指数、基氏流动度、奥亚膨胀度等指标的变化分析比较，结果表明，肥煤经长时间存放后，胶质层指数变化不明显，粘结指数、基氏流动度、奥亚膨胀度等性能指标呈下降趋势，不同温度下的流动度整体向低温区移动，且变质程度越低，下降幅度越大。肥煤经长期周转、运输后，应检测流动度、膨胀度指标，确定能否继续发挥肥煤作用，在配煤炼焦中应合理应用。