Particle Size and Surface Area Effects on Explosibility Using a 20-L Chamber

Details

• Personal Author:
  Harris, Marcia L. ; Perera IE ; Sapko, Michael J. ; Weiss, Eric S. ; Zlochower, Isaac A.
• Description:
  The Mine Safety and Health Administration (MSHA) specification for rock dust used in underground coal mines, as defined by 30 CFR 75.2, requires 70% of the material to pass through a 200 mesh sieve (<75 mm). However, in a collection of rock dusts, 47% were found to not meet the criteria. Upon further investigation, it was determined that some of the samples did meet the specification, but were inadequate to render pulverized Pittsburgh coal inert in the National Institute for Occupational Safety and Health (NIOSH) Office of Mine Safety and Health Research (OMSHR) 20-L chamber. This paper will examine the particle size distributions, specific surface areas (SSA), and the explosion suppression effectiveness of these rock dusts. It will also discuss related findings from other studies, including fullscale results from work performed at the Lake Lynn Experimental Mine. Further, a minimum SSA for effective rock dust will be suggested. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Dust Explosions Mining Occupational Health Particulate Matter Safety
• Keywords:
  Author Keywords: Dust Explosion Coal-mining Dust-particles Dusts Explosion-prevention Explosion Prevention Explosive-dusts Mining-industry Particle-aerodynamics Particle Size Particulate-dust Particulates Specific Surface Area Underground-mining

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• Series:
  Mining Publications
• ISSN:
  0950-4230
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OMSHR - Office of Mine Safety and Health Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  33-38
• Volume:
  37
• NIOSHTIC Number:
  nn:20046504
• Citation:
  J Loss Prev Process Ind 2015 Sep; 37:33-38
• Contact Point Address:
  Marcia L. Harris, Office of Mine Safety and Health Research, National Institute for Occupational Safety and Health, 626 Cochrans Mill Road, Pittsburgh, PA 15236
• Email:
  ztv5@cdc.gov
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Mining
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Loss Prevention in the Process Industries
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:dd0d652643c64d1ee3da3a319fe73cc602d748e8af8a8dc6fd3514781c108653c65d64b9d8e7a96a5b056281131d033cc54d5f074e83b72a57b37e02e98f5ce4
• Download URL:
  https://stacks.cdc.gov/view/cdc/228138/cdc_228138_DS1.pdf
• File Type:
  [PDF - 1.24 MB ]