Uranium recovery from pre-treated phosphoric acid
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United States of America Patent
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Jan 6, 1981
Issued Date -
N/A
app pub date -
Oct 11, 1977
filing date -
Oct 11, 1977
priority date (Note) -
Expired
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Abstract
Impure phosphoric acid containing uranium values is pretreated with a water immiscible organic sulfonic acid, preferably in conjunction with a water immiscible organic acid phosphate compound, for extraction of ionic metallic impurities and organic impurities to produce pretreated phosphoric acid containing uranium values. Pretreated phosphoric acid is contacted with a water immiscible extractant comprising an organic uranium-extracting agent, preferably an organophosphorus compound, dissolved in a water immiscible organic diluent to produce uranium-depleted phosphoric acid and uranium-enriched extractant. Uranium is recovered from the uranium-enriched extractant.
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