Removal of magnesia from dolomitic southern Florida phosphate concentrates by aqueous SO₂ leaching

Details

• Alternative Title:
  Removal of magnesia from dolomitic southern Florida phosphate concentrates by aqueous SO2 leaching
• Personal Author:
  Davis, Broderick E. ; Hansen, John P. ; Llewellyn, T. O.
• Corporate Authors:
  United States. Bureau of Mines ; University of Alabama
• Description:
  "The Bureau of Mines has investigated the so2 leaching of mgo from high-mgo-bearing Florida phosphate concentrates. The so2 was effective in leaching some of the mgo from three phosphate concentrates
  
  flow rate of the so2 and leach time were major factors in determing the amount of mgo leached. Calcining the samples, then grinding to minus 200 mesh, and elevating the leach temperature gave only small increases in the amount of mgo leached. The research also showed that some of the mgo was so intimately associated with the phosphate mineral that it could not be removed by so2 leaching. This amounted to about 0.6, 0.7, and 1.0 pct mgo in three leached residues. The calculated heads for the three concentrate samples averaged 1.4, 1.1, and 1.5 pct mgo, respectively, before leaching. This report is based upon work done under a memorandum of agreement between the Bureau of Mines, U.S. Department of the Interior, and the University of Alabama." - NIOSHTIC-2
  
  NIOSH no. 10004536
  
  
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  Florida ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  11 numbered pages
• NIOSHTIC Number:
  nn:10004536
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:63e2a7098e37243cb3a4fbfdca5d875dcfd2e227a79713d70b6f6262005f5b1c01c8cea874d81a7eef647723a8ec4c398bc9905bf6e96b7d5d344c8080f9d123
• Download URL:
  https://stacks.cdc.gov/view/cdc/10682/cdc_10682_DS1.pdf
• File Type:
  [PDF - 5.31 MB ]