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    Hydrometallurgical removal of uranium and thorium from Ethiopian tantalite ore

    272274.pdf (793.3Kb)
    Access Status
    Open access
    Authors
    Cheru, M.
    del Rosario, A.
    Yimam, A.
    Tadesse, Bogale
    Berhe, G.
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Cheru, M. and del Rosario, A. and Yimam, A. and Tadesse, B. and Berhe, G. 2018. Hydrometallurgical removal of uranium and thorium from Ethiopian tantalite ore. Physicochemical Problems of Mineral Processing. 55 (2): pp. 448–457.
    Source Title
    Physicochemical Problems of Mineral Processing
    DOI
    10.5277/ppmp18153
    ISSN
    1643-1049
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/73110
    Collection
    • Curtin Research Publications
    Abstract

    This study focused on the leaching of uranium and thorium from a high grade Ethiopian tantalite ore using sulfuric acid. The effects of variables such as acid concentration, temperature and leaching time were studied. In general, the leaching efficiency of uranium increases with increasing temperature from 100 to 300 °C whereas the opposite trend was observed for thorium. The amount of uranium leached increased from 69.1% at contact time of 1 hr to 88.6% when the tantalite ore was leached for 3 hrs. On the other hand, for the experiments conditions considered in this study, the leaching behavior of uranium and thorium did not change significantly with varying sulphuric acid concentration from 70 to 90 wt%. Overall, the highest dissolution of uranium and thorium were achieved at 100 °C, 70 wt% H2SO4 concentration and 1 hr contact time.

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