Experimental research on spontaneous combustion and explosion characteristics of dried lignite
Zhu Ziqi
Yang Zhongcan
Meng Yi
Yao Wei
Liu Tong
Yang Yali
Abstract：In order to prevent spontaneous combustion and explosion of lignite during stacking,the spontaneous combustion and explosion characteristic of lignite and its dried samples were investigated by using corresponding test beds.The results show that,the oxygen consumption rate increase by 0.17％/min and 0.11％/min respectively when the moisture of lignite reduces by 10％ and the particle size decreases by one grade.The average mass concentration of coal dust lower explosion limit decrease by 0.015 kg/m3 and 0.03 kg/m3 respectively when the moisture of lignite reduces by 5％ and the temperature increases by 10 ℃.Overall,the drier condition intensifies the risk of spontaneous combustion and explosion of lignite.
Keywords：lignitedryingspontaneous combustion characteristicexplosion characteristic
Publication Date：2017-01-01