Citation

Zhang C, Liu S, Yang L, Tian D, Yang T, Xu A. China Saf. Sci. J. 2020; 30(5): 21-26.

Copyright

(Copyright © 2020, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2020.05.004

PMID

unavailable

Abstract

In order to study combustion characteristics of coal dust of different metamorphism, 9 kinds of coal samples from various mines were selected and their industrial components such as moisture, volatiles, ash and fixed carbon were analyzed. Secondly, minimum ignition temperature experiments of coal dust clouds were performed. Finally, statistical and gray correlation analysis was conducted between industrial analysis index and minimum ignition temperature. The results show that the minimum ignition temperature differ sharply, varying from 405 to 515 ℃, and it is strongly correlated with industrial analysis index. Volatile and fixed carbon content are negatively correlated with it while ash and moisture content positively correlated with it. In other words, The higher volatile and fixed carbon content, the more likely coal dust is to catch fire, and the higher ash and moisture content, the more unlikely coal dust is to ignite. In addition, volatile content is mostly linked to minimum ignition temperature. © 2020 China Safety Science Journal. All rights reserved.

Language: zh