Purification of sodium diuranate produced from Gabal Gattar (GII) mineralization using tri-butyl phosphate

purification of the prepared sodium diuranate product to almost a nuclear purity grade, the solvent extraction technique was properly applied to study the vi rous relevant optimum condition. For this purpose, organophosphorus solvents has been used; namely tri butyl phosphate (TBP). The product sodium di-uranate contains only a small amount of the deleterious impurities which can be purified by solvent extraction technique. The prepared Na2U2O7 was dissolved in nitric acid so that the free acidity of the obtained solution attained 3M and its uranium content assayed 202 g/L. Nitrate solution from the TBP route used to prepare UO3 from the former, it was first evaporated at 95oC to decrease its volume to only 25% and which would increase uranium concentration. By proper cooling greenish yellow uranyl nitrate hexa hydrate crystals were formed and which were then left for air drying before denitration at 280-300oC for 4 hr. (Author)