EXTRACTION OF URANIUM FROM WET-PROCESS PHOSPHORIC ACID

• Main Authors: PAGE, JESSICA MARY, WAYRAUCH, COLIN, POOL, THOMAS CHARLES, BRISTOW, NICHOLAS WARWICK, SOLDENHOFF, KARIN HELENE, JONES, BRYN LLYWELYN, TAYLOR, KELVIN JOHN, CHALMERS, MARK S, DAVIDSON, JAMES ANDREW, MACINTOSH, PETER DOUGLAS, KUCERA, PAUL ROBERT, RICHARDSON, MARCUS WORSLEY, LYNN, NICK
• Format: Patent
• Language: English; French
• Published: 04.02.2010
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; FERROUS OR NON-FERROUS ALLOYS; INORGANIC CHEMISTRY; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

A process for the extraction of uranium compounds from wet-process phosphoric acid includes lowering the iron concentration of the wet-process phosphoric acid and reducing the valency of any remaining ferric iron in the wet-process phosphoric acid to ferrous iron, and then extracting uranium compounds from the wet-process phosphoric acid. The process can include separating a side stream from a feed stream of wet-process phosphoric acid, wherein the side stream has a greater concentration of the uranium compounds than the feed stream by filtration. Extracting uranium compounds from the wet-process phosphoric acid can be by ion exchange process or by solvent extraction.