Citation

Chen H, Yao Q, Zhang Y, Liu H, Zhang X. China Saf. Sci. J. 2019; 29(11): 96-102.

Copyright

(Copyright © 2019, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2019.11.016

PMID

unavailable

Abstract

In order to better prevent aluminum powder explosion, experimental study was conducted on influence sensitivity of different factors on minimum ignition temperature and explosion characteristics of micron-sized aluminum powder to reveal their influence degree. Minimum ignition temperature and explosion characteristics were tested through a dust cloud minimum ignition temperature test system and a 20L ball explosion device, respectively. The experimental results show that the smaller particles are, the larger specific surface areas will be, and the more likely aluminum powder is to be burned and exploded. The influence sensitivity of three factors on minimum ignition temperature of aluminum dust cloud ranks as particle size>dispersion pressure>concentration after they are analyzed one by one. And the rank of three factors which influence aluminum powder explosion parameters is concluded as particle size > ignition delay time > concentration after analysis on them one by one. © 2019 China Safety Science Journal. All rights reserved.

Language: zh