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    Leaching of rare earths from fine-grained zirconosilicate ore

    246533.pdf (754.8Kb)
    Access Status
    Open access
    Authors
    Lim, Hazel
    Ibana, Don
    Eksteen, Jacques
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Lim, H. and Ibana, D. and Eksteen, J. 2016. Leaching of rare earths from fine-grained zirconosilicate ore. Journal of Rare Earths. 34 (9): pp. 908-916.
    Source Title
    Journal of Rare Earths
    DOI
    10.1016/S1002-0721(16)60114-X
    ISSN
    1002-0721
    Faculty
    Faculty of Science and Engineering
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/16001
    Collection
    • Curtin Research Publications
    Abstract

    © 2016 The Chinese Society of Rare Earths. Leaching of rare earths Y, La and Ce by sulphuric acid from fine-grained zirconosilicate ore was investigated using Taguchi method of experimental design. An orthogonal array of L8, 27 which denotes 7 factors at 2 levels was chosen to consider the various factors relevant to the leaching process: baking time, baking temperature, acid dosage, leaching time, leaching temperature, grind size and dilution. Statistical analysis showed that sulphation baking was a significant step for the leaching of rare earths from the whole-of-ore and optimized leaching of rare earths involved the following condition: baking for 3 h at 320 °C at 3.2 g acid/g ore acid dosage followed by water leaching at 20 °C for 1 h and dilution of 20 mL water/g ore using 300 um grind size. The effect of each leaching factor was also discussed.

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