Process for producing uranium oxides

Abstract From the Canadian patent

The present invention provides a process for producing a uranium oxide by dissolving a yellow cake in sulfuric acid or hydrochloric acid, bringing the obtained solution into contact with a chelating resin of diaminocarboxylic acid type and subjecting the product to neutralizing precipitation followed by heat treatment. By the contact of the solution with the chelating resin, iron, copper molybdenum and, vanadium among the metallic impurities are removed and in the subsequent neutralizing precipitation step other metallic, impurities such as aluminum calcium, magnesium, sodium and, potassium removed. This process can easily produce uranium oxide having a high purity using a simple apparatus.