MAINTAINING REDUCTIVE STRIP EFFICIENCY IN URANIUM RECOVERY PROCESS

Maintaining the efficacy of ferrous ions in the reductive stripping of uranyl ions from organic extractant is described. The extractant contacts wet process phosphoric acid that has been oxidized with nitric acid and nitrate ions. The method comprises adding urea to the oxidized phosphoric. acid bef...

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Bibliographic Details
Main Authors LOPEZ JOSE G, RUDOLPH JOSEPH S, STANA REGIS R, MITCHELL EDWARD
Format Patent
LanguageEnglish
Korean
Published 15.06.1984
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS THEREOF
FERROUS OR NON-FERROUS ALLOYS
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
SEPARATION
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:Maintaining the efficacy of ferrous ions in the reductive stripping of uranyl ions from organic extractant is described. The extractant contacts wet process phosphoric acid that has been oxidized with nitric acid and nitrate ions. The method comprises adding urea to the oxidized phosphoric. acid before contacting the mixt. with extractant. Also claimed is the recovery of uranium from wet process phosphoric acid where the phosphoric acid is oxidized with nitric acid to provide uranyl ions in the acid. Addn. of urea prevents unwanted extn. or carry-over of nitrate and/or nitrate ions into the extractant.
Bibliography:Application Number: KR19810000197