Welcome to CDC Stacks | Leaching of Phosphate Values From Two Central Florida Ores Using H2 S04 -Methanol Mixtures - 10574 | National Institute for Occupational Safety and Health
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Leaching of Phosphate Values From Two Central Florida Ores Using H2 S04 -Methanol Mixtures
  • Published Date:
    1/1/1987
Filetype[PDF - 704.01 KB]


Details:
  • Description:
    The Bureau of Mines conducted preliminary investigations on the use of an acid-alcohol leaching technique for recovering phosphate values from phosphate matrices. H2S04 and methanol were used as the leaching agents. Starting-matrix particle size and acid-apatite ratio were found to significantly affect the efficiency of phosphate leaching. Phosphate extractions of more than 80 pct were obtained when minus 200-mesh ore was used and the acid-apatite ratio was 8:1 or more. The iron and aluminum oxide impurities (R203) present in the crude acid products were monitored, and R203-P205 ratios are reported. Phosphate extractions in excess of 80 pct also were obtained when phosphatic clay wastes were leached. Typically, leach slurries filtered using test leaf filters ex-hibited filtration rates of 100 lb/(h·ft2) or more.

  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like: