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Mining Publication: Particulate Penetration of Porous Foam Used as a Low Flow Rate Respirable Dust Size Classifier
Keywords: Aerosols Coal mining Hazards and exposures Mining workforce Respirable dust
Original creation date: July 2000
Authors: SJ Page, JC Volkwein, PA Baron, GJ Deye
Peer Reviewed Journal Article - July 2000
Download PDF Document (0.54 MB)
NIOSHTIC2 Number: 20020770
Appl Occup Env Hyg 2000 Jul; 15(7):561-568
Porous foam has been used as a material for classification of particulate matter into various size fractions. The penetration characteristics of a nominal 90 pores per inch porous foam were studied at various flow rates, face velocities, and foam plug diameters and compared to the aerosol penetration of a 10 mm Dorr Oliver cyclone operated at 1.7 L/min. Poly-dispersed triethanolamine spheres were classified through porous foam plugs and the resulting penetration was determined using an aerodynamic particle sizer. Results showed that for a given plug diameter, as face velocity increased from 26 to 39 cm/sec, the 50 percent cut point decreased from 4.5 to 3.8 microns. Furthermore, as the diameter of the plug increased from 4 to 12 mm, the 50 percent cut points were similar to other plug diameters at equivalent face velocities. The best match to the 1.7 L/min cyclone penetration characteristics occurred at a flow rate of 250 ml/min through a 25 mm by 4 mm diameter section of 90 pore per inch foam. Because of the need to provide short-term or real-time estimates of worker respirable dust exposure, porous foam may be a viable classification media for a low flow rate, disposable respirable dust sampler for use in the coal mining industry.
Image of publication Particulate Penetration of Porous Foam Used as a Low Flow Rate Respirable Dust Size ClassifierPeer Reviewed Journal Article - July 2000
Download PDF Document (0.54 MB)
NIOSHTIC2 Number: 20020770
Appl Occup Env Hyg 2000 Jul; 15(7):561-568
See Also
Bag and Belt Cleaner Reduces Employee Dust Exposure
Characterizing Exposures to Airborne Metals and Nanoparticle Emissions in a Refinery
Continuous Respirable Mine Dust Monitor Development
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
An Overview of Fundamental and Emerging Technologies to Monitor and Control Respirable Dust in Underground Coal Mines in the United States
Possible Impact of New Safety Technology Developments on the Future of the United States Mining Industry
Report on Early Strength Performance of Modern Day Weak Rock Mass Shotcrete Mixes
Respirable Quartz Hazard Associated with Coal Mine Roof Bolter Dust
Using Ventilation Control Technology to Reduce Respirable Dust Exposures at U.S. Metal/Nonmetal Mining Operations
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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