Method for preparing an actinide(s) oxalate and for preparing an actinide(s) compound
AssigneesCommissariat A L'energie Atomique Et Aux Energies Alternatives, Areva Nc
InventorsMurielle Bertrand, Stephane Grandjean, Bruno Courtaud, Frederic Auger
Life of this patent
Estimating the term…
Abstract
A method for preparing an oxalate of one or more actinides for processing and recycling nuclear fuel, comprising: the precipitation of said actinide or the coprecipitation of said actinides in the form of oxalate particles by bringing into contact an aqueous solution containing the actinide(s) with an aqueous solution of oxalic acid or of an oxalic acid salt; and the collection of the resulting oxalate particles; characterized in that the precipitation or coprecipitation is carried out in fluidized bed.
Claims16
A method for preparing particles of an oxalate of one or more actinides, comprising:
- precipitating the actinide(s) in a form of actinide(s) oxalate particles in a fluidized bed reactor by bringing a first aqueous solution comprising the actinide(s) into contact with a second aqueous solution of oxalic acid or of an oxalic acid salt in the fluidized bed reactor, and forming the actinide(s) oxalate particles having a spherical or quasi-spherical shape, and
- collecting the so precipitated actinide(s) oxalate particles.
Dependencies are inferred from the claim text.