Details:

Alternative Title:
Removal of magnesia from dolomitic southern Florida phosphate concentrates by aqueous SO2 leaching
Personal Author:
Hansen, J. P. (John Paul), 1928- ; Davis, B. E. (Broderick E.) ; Llewellyn, T. O.
Hansen, J. P. (John Paul), 1928- ; Davis, B. E. (Broderick E.) ; Llewellyn, T. O. Less -
Corporate Authors:
United States. Bureau of Mines. ; University of Alabama.
United States. Bureau of Mines. ; University of Alabama. Less -
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


Subject:
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Dolomite.
Leaching.
Magnesium Ores.
Sulfur Dioxide.

Series:
Report of investigations (United States. Bureau of Mines) ; 8953
Document Type:
Report
Place as Subject:
Florida
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:c99fef6034a8ad29cf360907679b8c46ac5c1788bf4bec51e75384d1d3b922d6
File Type:

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