Explosion Temperatures of Metals and Other Elemental Dust Clouds [2006]

Details

• Journal Article:
  Journal of Loss Prevention in the Process Industries
• Personal Author:
  Cashdollar, Kenneth L. ; Zlochower, Isaac A.
• Corporate Authors:
  National Institute for Occupational Safety and Health
• Description:
  The Pittsburgh Research Laboratory of the National Institute for Occupational Safety and Health (NIOSH) conducted a study of the explosibility of various metals and other elemental dusts, with a focus on the experimental explosion temperatures. The data are useful for understanding the basics of dust cloud combustion, as well as for evaluating explosion hazards in the minerals and metals processing industries. The dusts studied included boron, carbon, magnesium, aluminum, silicon, sulfur, titanium, chromium, iron, nickel, copper, zinc, niobium, molybdenum, tin, hafnium, tantalum, tungsten, and lead. The dusts were chosen to cover a wide range of physical properties-from the more volatile materials such as magnesium, aluminum, sulfur, and zinc to the highly "refractory" elements such as carbon, niobium, molybdenum, tantalum, and tungsten. These flammability studies were conducted in a 20-L chamber, using strong pyrotechnic ignitors. A unique multiwavelength infrared pyrometer was used to measure the temperatures. For the elemental dusts studied, all ignited and burned as air-dispersed dust clouds except for nickel, copper, molybdenum, and lead. The measured maximum explosion temperatures ranged from "-1550K for tin and tungsten powders to "-2800K for aluminum, magnesium, and titanium powders. The measured temperatures are compared to the calculated, adiabatic flame temperatures.
• Subjects:
  Mining Occupational Health Safety
• Keywords:
  Analytical-processes Dust-particles Explosion-prevention Explosive-dusts Metal-dusts Metal-mining Metallic-dusts Mining-industry Particulate-dust Particulates
• Source:
  Kenneth L. Cashdollar, Isaac A. Zlochower. Explosion temperatures and pressures of metals and other elemental dust clouds. Journal of Loss Prevention in the Process Industries, Volume 20, Issues 4–6. 2007. Pages 337-348. ISSN 0950-4230. https://doi.org/10.1016/j.jlp.2007.04.018
• Series:
  Mining Publications
• DOI:
  https://doi.org/10.1016/j.jlp.2007.04.018
• ISSN:
  0950-4230
• Document Type:
  Text
• Genre:
  Journal Article
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  12 pdf pages
• Volume:
  20
• Issue:
  4
• NIOSHTIC Number:
  nn:20031124
• Citation:
  J Loss Prev Process Ind 2007 Jul/Nov; 20(4-6):337-348
• Email:
  KCashdollar@cdc.gov
• CAS Registry Number:
  Carbon (CAS RN 7440-44-0) ; Magnesium (CAS RN 7439-95-4) ; Aluminum (CAS RN 7429-90-5) ; Sulfur (CAS RN 7704-34-9) ; Titanium (CAS RN 7440-32-6) ; Iron (CAS RN 7439-89-6) ; Nickel (CAS RN 7440-02-0) ; Copper (CAS RN 7440-50-8) ; Zinc (CAS RN 7440-66-6) ; Molybdenum (CAS RN 7439-98-7) ; Tin (CAS RN 7440-31-5) ; Hafnium (CAS RN 7440-58-6) ; Lead (CAS RN 7439-92-1) ; Boron (CAS RN 7440-42-8) ; Chromium (CAS RN 7440-47-3) ; Niobium (CAS RN 7440-03-1) ; Silicon (CAS RN 7440-21-3) ; Tantalum (CAS RN 7440-25-7) ; Tungsten (CAS RN 7440-33-7)
• Federal Fiscal Year:
  2007
• Peer Reviewed:
  True
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:4b82f9ee932c0337dc41fdeadc919f865a6b35b1d18e995dd1174f4abdabfcb2e7aefff090ce8fb5f88be9b39aafa6680731d6c34b93b10edf30e99b3f32fa32
• Download URL:
  https://stacks.cdc.gov/view/cdc/8758/cdc_8758_DS1.pdf
• File Type:
  [PDF - 1.25 MB ]