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Multi-Phase Computer Modeling and Laboratory Study of Dust Capture by an Inertial Vortecone Scrubber



Details

  • Personal Author:
  • Description:
    Dust generated in mining and tunneling activities is hazardous to health of persons and safety of operations. These projects employ pick-milling machines to extract minerals and rock by mechanical breakage. The machines are equipped with flooded-bed scrubbers that encase dust particles within fine water films as particles encounter a flooded wire-mesh screen. A major disadvantage is that the screen gets clogged when particles become trapped within the wire mesh, reducing airflow through the scrubber and increasing ambient dust concentrations. Thus, the system requires frequent maintenance or replacement. The application of a Vortecone scrubber as an improved alternative to conventional fibrous type scrubbers is investigated. A Vortecone forces dust-laden air and water to follow a complex, rapidly swirling motion. The momentum drives dust particles towards the periphery where they are captured by the water film. The operating characteristics of a reduced-scale physical model of a Vortecone, with its primary axis mounted in the horizontal orientation, was analyzed numerically and experimentally. Computational fluid dynamics (CFD) models depicting the spraying action and multi-phase air/water flows using the volume of fraction (VOF) approach, are presented. Experimental results, utilizing an optical particle counting technique to establish the dust-cleaning capabilities of the model, are also described. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    2095-2686
  • Document Type:
    Text
  • Funding:
    Contract
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    287-291
  • Volume:
    30
  • Issue:
    3
  • NIOSHTIC Number:
    nn:20068405
  • Citation:
    Int J Min Sci Technol 2020 May; 30(3):287-291
  • Contact Point Address:
    Ashish Ranjan Kumar, Department of Mining Engineering, University of Kentucky, 504 Rose Street, 230 Mining and Mineral Resources Building, Lexington, KY 40506, United States
  • Email:
    ashish.kumar@uky.edu
  • Federal Fiscal Year:
    2020
  • Performing Organization:
    University of Kentucky
  • Peer Reviewed:
    True
  • Start Date:
    20140901
  • Source Full Name:
    International Journal of Mining Science and Technology
  • End Date:
    20190831
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:6f143d7df10dcf6152321495ce04acd9d6f1371333077008b8114a38a7bbd364f113240b058839fc1e9b500be7c75ce1ccb57888b2b08e7ea73a56e773d6d9ff
  • Download URL:
  • File Type:
    Filetype[PDF - 999.11 KB ]
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