Airborne Dust Liberation During Coal Crushing

Details

• Personal Author:
  Organiscak, John A. ; Page, Steven J.
• Description:
  Airborne dust generation is one of the byproducts of coal mining, processing, and handling. The amount of airborne total dust (ATD, respirable size and larger) and airborne respirable dust (ARD) generated is of primary interest for designing the level of engineering controls needed for adequate dust abatement. Laboratory crushing experiments were conducted in a wind tunnel with a roll crusher to identify relationships among crushing parameters, product size, coal rank properties, and airborne dust generation. Through the first series of experiments, the effect of primary and secondary breakage processes on both product size and airborne dust generation was examined. Through a second series of experiments, the effect of coal rank properties on product size and airborne dust generation was studied using a uniform crushing process with secondary breakage. Laboratory results indicate that secondary breakage of a particular coal notably increases the specific amount of ATD generated, while negligibly impacting the specific amounts of ARD generated. A strong positive relationship was identified between the specific amounts of ATD and ARD generated during the primary breakage process (with minimal secondary breakage), but a negligible relationship was observed between the same two variables when secondary breakage was introduced into the crushing process. This indicates that most of the ATD and ARD is generated from the primary breakage, while secondary breakage has more of an influence on generating additional amounts of larger sized ATD. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Coal Coal Mining Dust Mining Occupational Health Particulate Matter Safety
• Keywords:
  Airborne-dusts Airborne-particles Airborne Dust Liberation Author Keywords: Coal Crushing Coal-dust Coal-miners Coal-mining Coal Product Size Coal Rank Control-technology Dust-particles Dusts Mine-workers Miners Mining-industry Respirable-dust

  More +
• Series:
  Mining Publications
• ISSN:
  0734-9343
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  423-453
• Volume:
  21
• NIOSHTIC Number:
  nn:20021825
• Citation:
  Coal Prep 2001 Jun; 21:423-453
• Contact Point Address:
  National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, Pittsburgh, PA 15236
• Email:
  jdo3@cdc.gov
• Federal Fiscal Year:
  2001
• NORA Priority Area:
  Work Environment and Workforce ; Research Tools and Approaches: Control Technology & Personal Protective Equipment
• Peer Reviewed:
  True
• Source Full Name:
  Coal Preparation
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:86c5dddf30ec8eda7bdc2c7db3a38e1afdbd9bf4a44bc9b2765bc1fd699b8ae7206a86468e4e162493255dda6a5a7740c3646822371940369f26fcb5d0f6a55b
• Download URL:
  https://stacks.cdc.gov/view/cdc/220511/cdc_220511_DS1.pdf
• File Type:
  [PDF - 944.36 KB ]