... This paper discusses the possibilities of pulverized coal explosions in pneumatic conveying. To characterize the coal dust explosions, we measured, at different points on rectilinear pipes, possibly connected to a 1-m 3 vessel, explosion overpressures, P max , and flame speeds. Trials...

... To investigate the buildup and development of coal dust explosions, comprehensive tests were carried out in a 8-m 2 , 700-m-long explosion gallery at the Experimental Mine Tremonia. The majority of these tests were done with “Dortmund standard coal dust” (coking coal) with a mean particle size...

... kg/cm 2 they rupture and water disperses to form a spray cloud, which lasts for 75 to 150 ms. The cloud is 7 m long and spreads about 4 m wide. For extinguishing coal dust explosions, water barrier tests were conducted in our experimental gallery (896-m total length and 7.2-m 2 cross section...