Extraction process for purification of phosphoric acid
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United States of America
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Jul 10, 1984
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N/A
app pub date -
Oct 11, 1979
filing date -
May 20, 1976
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Abstract
Water immiscible organic acid phosphates used in conjunction with water immiscible organic sulfonic acids results in an improved process for the purification of phosphoric acid. An increase in the extraction of ionic metallic impurities and a decrease in the extraction of P.sub.2 O.sub.5 values from the aqueous phosphoric acid phase .[.is.]. .Iadd.are .Iaddend.observed in the improved solvent extraction process.
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