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Mining Publication: Investigation of Coal Properties and Airborne Respirable Dust Generation
Keywords: Bituminous coal Coal dust Respirable dust Respirable dust level
Original creation date: October 1998
Authors: JA Organiscak, SJ Page
Report of Investigations - October 1998
Download PDF Document (0.26 MB)
NIOSHTIC2 Number: 20000281
Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, NIOSH, DHHS (NIOSH) Publication No. 98-160, Report of Investigations 9645, 1998 Oct; :1-16
Laboratory crushing experiments were conducted on a range of low- to high-volatile bituminous coals to investigate the various factors influencing airborne respirable dust (ARD) generation. This research was conducted to identify the principles of ARD liberation from the coal product. Five U.S. bituminous coals were uniformly prepared and processed through a double roll crusher located in a low-velocity wind tunnel. Experimental factors studied included inherent coal seam constituents, coal grindability, specific energy of crushing, product size characteristics, dust cloud electrostatic field, and specific ARD generated. The results of this investigation indicate that a combination of several factors are associated with ARD generation. One factor is the effect of coal rank, described by the inherent moist fuel ratio, on the product size characteristics, defined by Schuhmann size function parameters. Another key factor is the effect of air dry loss (ADL) moisture in the coal seam on the breakage-induced electrostatic field of airborne dust. The effect of these factors is that different percentages of <10-)m coal particles are dispersed as ARD. A discussion of electrostatic field principles, coal ADL, and its effect on ARD generation is presented.
Image of publication Investigation of Coal Properties and Airborne Respirable Dust GenerationReport of Investigations - October 1998
Download PDF Document (0.26 MB)
NIOSHTIC2 Number: 20000281
Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, NIOSH, DHHS (NIOSH) Publication No. 98-160, Report of Investigations 9645, 1998 Oct; :1-16
See Also
Benchmarking Longwall Dust Control Technology and Practices
Characterization of Submicron-/Nano-scale Coal Dusts and Their Effects on Miners' Pneumoconiosis and Lung Cancer for Underground Coal Mines
Determining the Spatial Variability of Personal Sampler Inlet Locations
Dust Considerations When Using Belt Entry Air to Ventilate Work Areas
Enhanced Utilization of Personal Dust Monitor Feedback
Equivalency of a Personal Dust Monitor to the Current United States Coal Mine Respirable Dust Sampler
Evaluation of the Approach to Respirable Quartz Exposure Control in U.S. Coal Mines
Laboratory Testing To Quantify Dust Entrainment During Shield Advance
Status of a Tapered Element, Oscillation Microbalance-Based Continuous Respirable Coal Mine Dust Monitor
Using Proximate Analysis to Characterize Airborne Dust Generation from Bituminous Coals
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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