Hydrometallurgical Production of Uranium Dioxide For Reactor Fuel Elements

The reduction of aqueous slurries of uranyl carbonate at elevated temperature with compressed hydrogen m the presence of metal catalysts and certain organic promoters has been shown. to yield uranium dioxide. The reduct10n takes place in a sequence of steps. The purity and sintering properties of the dioxide make it of interest as a starting material for fuel element production. Simple control can be exercised over the surface area and oxygen / uranium ratio of the product during reduction.
Keywords: ammonium diuranate, anthraquinone, carbon dioxide, partial pressure, uranium dioxide, carbon dioxide, Catalysts, nickel, Oxide, Pressure, Reduction, Sintering, Temperature, uranium
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