Dust Control by Air-Blocking Shelves and Dust Collector-to-Bailing Airflow Ratios for a Surface Mine Drill Shroud

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) 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 the present 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. [Description provided by NIOSH]
• Subjects:
  Dust Lung Diseases Mining Occupational Health Respiratory Tract Diseases Safety Silicon Dioxide
• Keywords:
  Airflow Blasting Dust Collection Dust Control Dusts Lung Disease Mining Industry Models Pulmonary System Disorders Respirable Dust Respiratory System Disorders Silica Dusts Silicosis Surface Mining

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• Series:
  Mining Publications
• ISSN:
  0026-5187
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; 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:
  69-74
• Volume:
  70
• Issue:
  5
• NIOSHTIC Number:
  nn:20051545
• Citation:
  Min Eng 2018 May; 70(5):69-74
• CAS Registry Number:
  Silica (CAS RN 7631-86-9)
• Federal Fiscal Year:
  2018
• NORA Priority Area:
  Mining
• Peer Reviewed:
  True
• Source Full Name:
  Mining Engineering
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7aa71fcff62f2b072867062a99cf6494a14ed6ee0043c1c6974406ee7f0b1fcf0a6d41bc7c1117db82d263473f6d6fb60aae8272adcf77f212eaba566220b1a2
• Download URL:
  https://stacks.cdc.gov/view/cdc/227671/cdc_227671_DS1.pdf
• File Type:
  [PDF - 3.18 MB ]