粒度对低阶喷吹煤的爆炸性影响研究  

Study of how granularity affected explosiveness of low-order injection coal

作　　者：辛德祥[1] 车涛[1] 陈洪博 郑毅[1] 孟凡彩[1] 

机构地区：[1]兖州煤业股份有限公司选煤管理中心,山东邹城273500 [2]煤炭科学技术研究院有限公司煤化工分院,北京100013 [3]煤炭资源高效开采与洁净利用国家重点实验室,北京100013

出　　处：《煤质技术》2015年第5期62-64,共3页Coal Quality Technology

摘　　要：用振筛机和不同孔径的筛子将金鸡滩煤粉筛分出7个粒度级的样品,对不同粒度级的筛分煤粉进行爆炸性测试试验研究。研究结果表明:随着粒度的增大,煤粉的爆炸性逐渐变弱,直至变为无爆炸性;粒度增大至0.102 mm^0.125 mm,煤粉的爆炸性已显著降低;粒度再增大至0.15mm^0.25 mm,煤粉已无爆炸性。Seven particle size fractions of Jinjitan pulverized coal samples were screened using sieve shaker and different aperture sieve.Experimental study on explosive test of pulverized coal samples was carried out.The results proved that pulverized coal explosiveness became weak gradually with the increase of particle size and became non — explosive at last;the explosiveness had been significantly reduced when granularity increased to 0.102 mm～0.125 mm and became non—explosive when granularity increased to 0.15 mm～0.25 mm.

关 键 词：喷吹煤 爆炸性 粒度 长焰煤 

分 类 号：TQ536[化学工程—煤化学工程]