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i

Thermal and electrical ignitability of dust clouds

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File Language:
English


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  • Personal Author:
    Conti, Ronald S.
  • Corporate Authors:
    United States. Bureau of Mines
  • Description:
    "The Bureau of Mines conducted a comprehensive laboratory study of the thermal ignitability of various carbonaceous dust clouds with particular emphasis on various ranks of coal dust. The tests were conducted using a new 1.2-L furnace. Autoignition temperatures of dust clouds were obtained as a function of coal volatility and particle size. Dust particles and gas samples were collected by a rapid-sampling system in order to study the reactions involved in preignition and postignition processes. The autoignition temperatures measured in the new 1.2-L furnace were significantly lower and therefore more conservative than those measured previously in the Godbert-Greenwald furnace. The combined effects of thermal and electrical ignition of dust clouds were also studied in the 1.2- L furnace using electrical discharges of varying energies at ambient and elevated temperatures. The minimum spark energy necessary to ignite a dust cloud decreased significantly as the temperature of the dust cloud increased." - NIOSHTIC-2

    NIOSH no. 10003092

  • Subjects:
  • Series:
    Mining Publications
  • Subseries:
    Report of Investigations
  • Document Type:
    Text
  • Genre:
    Report
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    iii, 40 numbered pages
  • NIOSHTIC Number:
    nn:10003092
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:05412895b2566021b8e1ac920b0abb420e641580c5269a0bcdca2e7e2b527c9f2ed0115578ef6fff711716bfdfef3914ecfa86ac1f8299d5408572c9d0bde115
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  • File Type:
    Filetype[PDF - 15.39 MB ]
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