Effects of Air-Blocking Shelves on Dust Dispersion for a Drill Shroud Using Computational Fluid Dynamics

Details

• Personal Author:
  Li M ; Potts, J. Drew ; Reed, William R. ; Rider, James P. ; Zheng Y
• Description:
  The National Institute for Occupational Safety and Health (NIOSH) has recently developed a series of validated models utilizing computational fluid dynamics (CFD) to study the effects of air-blocking shelves on airflows and respirable dust distribution associated with medium-sized surface blasthole drill shrouds as part of a dry dust collector system. Using validated CFD models, three different air-blocking shelves were included in this study: a 15.2-cm (6-in.) wide shelf; a 7.6-cm (3-in.) wide shelf; and a 7.6-cm (3-in.) wide shelf at four different shelf heights. In addition, the dust-collector-to-bailing airflow ratios of 1.75:1, 1.5:1, 1.25:1, and 1:1 were evaluated for the 15.2-cm (6-in.) wide air-blocking shelf. This paper describes the methodology used to develop the CFD models. The effects of air-blocking shelves and dust-collector-to-bailing airflow ratios were identified by the study, and problem regions were revealed under certain conditions. The simulation results could be used for future development of dust control methods, particularly to address respirable silica dust, for a surface mine blasthole drill shroud. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety Staff Development
• Keywords:
  Air Flow Coal Mines Coal Mining Control Methods Drilling Dust Collectors Dust Exposure Dusts Mining Industry Models Respirable Dust Silica Dusts Surface Mining Underground Mines

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• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-6
• NIOSHTIC Number:
  nn:20058983
• Citation:
  2019 SME Annual Meeting, February 24-27, 2019, Denver, Colorado, preprint 19-021. Englewood, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2019 Feb; :1-6
• Contact Point Address:
  Y. Zheng, NIOSH, Pittsburgh, PA
• CAS Registry Number:
  Silica (CAS RN 7631-86-9)
• Federal Fiscal Year:
  2019
• Peer Reviewed:
  False
• Source Full Name:
  2019 SME Annual Meeting, February 24-27, 2019, Denver, Colorado, preprint 19-021
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:00f3581edd7d25dd996ca3cdf46558c78078e500b0577f0bcb63ea31d0c79c3bcbbc77ae24706a8eef214d96d0f1e18560d394ea5b238fd1dfce91e5a9782b98
• Download URL:
  https://stacks.cdc.gov/view/cdc/227978/cdc_227978_DS1.pdf
• File Type:
  [PDF - 530.11 KB ]