Leaching of uranium from a technological sample (680 mg/Kg U) in SW Sinai of Um Bogma Formation is carried out using a mix of sodium carbonte/sodium bicarbonate in presence of an oxidant (MnO 2 or H 2 O 2 ). The relevant factors e.g. (grain size = À 200 mesh, alkali concentration = 100 g/l (3 : 1) mixed Na 2 CO 3 / NaHCO 3 , time = 2 h, solid/liquid ratio = 1/3, T = 50°C and H 2 O 2 = 60 ml) of alkaline leaching of uranium have been optimized. This is followed by uranium recovery using an anion exchange resin, modified Dowex 1X8/TOA. Therefore, highly 92 % pure product of uranium has been obtained as sodium di-urinate Na 2 U 2 O 7 .
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