Recovery of Uranium from Alkaline Ore Leach Solution Using a Precipitating Method

Sujoy Biswas; V. H. Rupawate; M.L. Sahu

doi:10.37256/sce.11202083.1-8

Authors

Sujoy Biswas Uranium Extraction Division, Materials Group, Bhabha Atomic Research Centre, Trombay, Mumbai – 400085, India
V. H. Rupawate Uranium Extraction Division, Materials Group, Bhabha Atomic Research Centre, Trombay, Mumbai – 400085, India
M.L. Sahu Uranium Extraction Division, Materials Group, Bhabha Atomic Research Centre, Trombay, Mumbai – 400085, India

DOI:

https://doi.org/10.37256/sce.11202083.1-8

Keywords:

uranium, carbonate ore, leaching, MDU, XRD

Abstract

In this paper, the recovery of uranium from carbonate ore leach solution has been reported using a novel precipitation method. The method is based on the precipitation of uranium as yellow-colored magnesium diuranate (MDU) using an MgO/NaOH mixture. The process has been finalized by optimizing various process parameters such as the concentration of CO₃^2-, HCO₃^-, HCl, NaOH, MgOand reaction temperature. The overall recovery of uranium was 97%. The chemical composition of the yellow precipitate (MDU) was evaluated using the X-ray diffraction (XRD) technique. A process flow sheet has been developed for the recovery of U(VI) from low-concentration carbonate ore leach solution.

Recovery of Uranium from Alkaline Ore Leach Solution Using a Precipitating Method

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