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Study of scandium and thorium sorption from uranium leach liquors |
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| Authors: | Alexey L Smirnov Svetlana M Titova Vladimir N Rychkov Grigory M Bunkov Vladimir S Semenishchev Eugeny V Kirillov Nikolay N Poponin Ilya A Svirsky |
| Institution: | 1.Department of Rare Metals and Nanomaterials,Ural Federal University,Yekaterinburg,Russia;2.Department of Radiochemistry and Applied Ecology,Ural Federal University,Yekaterinburg,Russia;3.Joint-Stock Company “Dalur”,Uksyanskoe,Russia |
| Abstract: | Scandium and thorium sorption from simulated uranium leach liquors by phosphorous containing ion exchange resins was studied. Increase of thorium concentration resulted in a decrease of scandium sorption by 26–65%. Tulsion CH 93 resin was chosen for Sc separation from uranium leach liquors. It was shown that 180 g L?1 Na2CO3 allowed for elution 94.1% of Sc and 98.9% of Th in dynamic conditions. Using (NH4)2SO4 (50 g L?1) + ACBM (180 g L?1) mixture for primary Sc/Th separation at the resin/eluent ratio of 1:5 resulted in thorium desorption degree as high as 66–69%, whereas scandium loss did not exceed 10%. |
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