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Mining Publication: Influence of Specific Surface Area on Coal Dust Explosibility Using the 20-L Chamber
Keywords: Coal dust Inerting atmosphere Rock dusting
Original creation date: July 2018
Authors: I Zlochower, M Sapko, I Perera, C Brown, M Harris, N Rayyan
Peer Reviewed Journal Article - August 2018
Go to Web Page
NIOSHTIC2 Number: 20051211
J Loss Prev Process Ind 2018 Jul; 54:103-109
The relationship between the explosion inerting effectiveness of rock dusts on coal dusts, as a function of the specific surface area (cm2/g) of each component is examined through the use of 20-L explosion chamber testing. More specifically, a linear relationship is demonstrated for the rock dust to coal dust (or incombustible to combustible) content of such inerted mixtures with the specific surface area of the coal and the inverse of that area of the rock dust. Hence, the inerting effectiveness, defined as above, is more generally linearly dependent on the ratio of the two surface areas. The focus on specific surface areas, particularly of the rock dust, provide supporting data for minimum surface area requirements in addition to the 70% less than 200 mesh requirement specified in 30 CFR 75.2.
First page of Influence of Specific Surface Area on Coal Dust Explosibility Using the 20-L ChamberPeer Reviewed Journal Article - August 2018
Go to Web Page
NIOSHTIC2 Number: 20051211
J Loss Prev Process Ind 2018 Jul; 54:103-109
See Also
Coal Dust Explosibility
Coal Dust Explosibility Meter Evaluation and Recommendations for Application
Coal Dust Particle Size Survey of U.S. Mines
Coal Dust Particle Size Survey of US Mines
Determining Flame Travel Measurements from Experimental Coal Dust Explosions
How Does Limestone Rock Dust Prevent Coal Dust Explosions in Coal Mines?
Mitigating Coal Dust Explosions in Modern Underground Coal Mines
Recommendations for a New Rock Dusting Standard to Prevent Coal Dust Explosions in Intake Airways
Rock Dusting Considerations in Underground Coal Mines
Technology News 515 - Float Coal Dust Explosion Hazards
Page last reviewed: December 18, 2018
Page last updated: December 18, 2018
Content source: National Institute for Occupational Safety and Health, Mining Program
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