Formation of Airborne -Respirable Dust at Belt Conveyor Transfer Points

Details

• Personal Author:
  Cheng L
• Description:
  Laboratory study of the formation of airborne respirable dust by the dropping of broken bituminous coal from a belt conveyor reveals that about 10% of the respirable dust adhering to the broken coal becomes airborne owing to dislodgement upon impact. The specific formation of airborne dust is correlated empirically with the volume fraction of the falling coal, which is determined by the belt speed, the thickness of the coal layer on the belt surface, the material density, the bulk density, the angle of repose, the size of the broken coal, and the height of fall. Results are interpreted in terms of the shock dislodgement of dust particles adhering to the broken coal, and the dispersion of the dislodged particles by the surge of air from the space gaps in the impacting pieces. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Coal Coal Mining Dust Mining Occupational Health Particulate Matter Respiratory Tract Diseases Safety
• Keywords:
  Aerosol-particles Airborne-dusts Airborne-particles Coal-dust Coal-mining Dust-control Dust-particles Instrumentation Material-handling-equipment Mining-equipment Particulate-dust Respiratory-system-disorders Working-environment

  More +
• Series:
  Mining Publications
• ISSN:
  0002-8894
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  34
• Issue:
  12
• NIOSHTIC Number:
  nn:00024095
• Citation:
  Am Ind Hyg Assoc J 1973 Dec; 34(12):540-546
• Contact Point Address:
  Lung Cheng, U.S. Department of the Interior, Bureau of Mines, 4800 Forbes Ave., Pittsburgh, Pennsylvania 15213
• Federal Fiscal Year:
  1974
• Peer Reviewed:
  True
• Source Full Name:
  American Industrial Hygiene Association Journal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:15c4b0864919d2ed3f6b80b3d94b2b87448ecac52d092eccf28dfa773359a1af873c3a1775490b3e0344daf01099bc9eec965ea9a5e618f6297278b3dc24e7ac
• Download URL:
  https://stacks.cdc.gov/view/cdc/219297/cdc_219297_DS1.pdf
• File Type:
  [PDF - 458.09 KB ]