Resin-in-pulp method for uranium recovery from leached pulp of low grade uranium ore |
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| Affiliation: | 1. Al-Farabi Kazakh National University, Department of General and Inorganic Chemistry, Almaty, Kazakhstan;2. University of Helsinki, Department of Chemistry, Laboratory of Radiochemistry, Helsinki, Finland;3. LLP “EcoRadSM”, Almaty, Kazakhstan |
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| Abstract: | An improved process for the separation of uranium from the leached pulp of low grade uranium ore is reported using the resin-in-pulp method. For this study, four small pachucas were designed and calibrated. A series of tests were conducted batch-wise to determine the optimum conditions for uranium adsorption on a strong base anion exchange resin. The particle size of resin was 0.6–1.6 mm and the particle size of pulp was − 0.1 mm. Flow rates of resin and pulp were adjusted on 10 ml/h and 1 ml/h, respectively. The redox potential of pulp was 500 mV and the pH of pulp was 1.8. A McCabe Thiele diagram was constructed for the process and the experimental results confirmed the theoretical predictions. It is concluded that four stage counter-current resin-in-pulp operation under optimum conditions is sufficient to recover about 99% of the uranium from the leached ore. |
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