Dust control by air-blocking shelves and dust collector-to-bailing airflow ratios for a surface mine drill shroud

Details

• Alternative Title:
  Min Eng
• Personal Author:
  Zheng, Y. ; Reed, W.R. ; Potts, J.D. ; Li, M. ; Rider, J.P.
• 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.
• Subjects:
  Coal Coal Mining Dust Occupational Exposure
• Source:
  Min Eng. 70(5):69-74.
• Pubmed ID:
  29780181
• Pubmed Central ID:
  PMC5956536
• Document Type:
  Journal Article
• Funding:
  CC999999/Intramural CDC HHS/United States
• Volume:
  70
• Issue:
  5
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:cc4a9fda3640a5a248da43620a36dc8c2bd3fc53576363ff30d58fc46d6d1df7
• Download URL:
  https://stacks.cdc.gov/view/cdc/54365/cdc_54365_DS1.pdf
• File Type:
  [PDF - 1.06 MB ]