Report of Investigations 9467: Improved 6.8-L Furnace for Measuring Autoignition Temperatures of Dust Clouds

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9467
• Personal Author:
  Cashdollar, Kenneth L. ; Conti, Ronald S. ; Thomas, Richard A.
• Description:
  A new U.S. Bureau of Mines 6.8-L ignitability furnace was used to study the thermal autoignitability of dust clouds. The furnace has a quartz window to allow observation of the early stages of the ignition process and to allow measurement of the dust explosion temperature. Thermal ignitability data were obtained for various carbonaceous and metal dust clouds, with particular emphasis on various ranks of coal dusts. One of the reasons for the construction of the new 6.8-L furnace was to evaluate the effect of chamber volume on the measured autoignition temperatures. Therefore, data from the 6.8-L furnace were compared with data measured earlier in a 1.2-L furnace. The conclusion is that the autoignition temperatures measured in the 6.8-L furnace were only slightly lower on average than those from the 1.2-L furnace. These data on the minimum autoignition temperatures of various materials will be useful in analyzing the thermal ignition hazards of dust clouds in the mining industry and other industries that manufacture, process, or use combustible dusts. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Dust Mining Occupational Health Safety
• Keywords:
  Ignition-temperature; Tests; Furnaces; Dust-explosions; Mine-safety; Combustion-chambers; Coal-dust; Autoignition
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9467, 1993 Jan; :1-26
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  31 pdf pages
• NIOSHTIC Number:
  nn:10012108
• NTIS Accession Number:
  PB93-215697
• Federal Fiscal Year:
  1993
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e5dc644e77a0ab338930ae0f4797681e5ee734ff12d09213b1e40f40bc9727049e297fed00ca5b7985597d63ad515d0fe559114e07e68171603ba09a96e988b5
• Download URL:
  https://stacks.cdc.gov/view/cdc/10159/cdc_10159_DS1.pdf
• File Type:
  [PDF - 934.54 KB ]