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Characteristics and Evaluation of Leaching Behavior of Uranium Mineralization in Qash Amir Granite, South Eastern Desert, Egypt

Received: 12 January 2021     Accepted: 16 March 2021     Published: 22 March 2021
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Abstract

In the Halaib area, South Eastern Desert, Egypt, numerous occurrences of uranium have been found. Uranium occurs as disseminated minerals (uraninite, uranophane, beta-uranophane) in G. Qash Amir muscovite monzogranite. The muscovite monzogranite (G. Qash Amir) is affected by deutric alteration and characterized by gradational contact with two-mica monzogranite, peraluminous in nature with visible primary and secondary uranium minerals, beryl and columbite. Uranium dissolution efficiency of 81.0 % was obtained using acid agitation leaching without oxidant addition, while dissolution efficiency increased to about 92% when ORP was increased to about 475mV using MnO2 as an oxidizing agent in Qash Amir uranium mineralization. Column tests were performed to study the effect of the parameters on uranium leaching and acid consumption. After 40 days of column leaching tests, uranium recovery of 74.2% was obtained at a flow rate of 10 l/m2/h and acid consumption was achieved by 26.2 kg per ton of ore. The addition of MnO2 as oxidant leads to a significant increase in the column leaching efficiency to 87% and decreasing acid consumption to 22kg per ton of ore in 35 days. The plot of 1-(1-x) 1/3 vs. t is linear and the R squared values for particle diffusion control line is 0.98, therefore the shrinking-core model is verified.

Published in American Journal of Applied and Industrial Chemistry (Volume 5, Issue 1)
DOI 10.11648/j.ajaic.20210501.12
Page(s) 7-16
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Column Leaching, Uranium Leaching Efficiency, MnO2 Oxidant, Shrinking Core Model

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    Mohamed Soliman Nagar, Bayoumi Mostafa Bayoumi, Walid Mohamed Morsy. (2021). Characteristics and Evaluation of Leaching Behavior of Uranium Mineralization in Qash Amir Granite, South Eastern Desert, Egypt. American Journal of Applied and Industrial Chemistry, 5(1), 7-16. https://doi.org/10.11648/j.ajaic.20210501.12

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    ACS Style

    Mohamed Soliman Nagar; Bayoumi Mostafa Bayoumi; Walid Mohamed Morsy. Characteristics and Evaluation of Leaching Behavior of Uranium Mineralization in Qash Amir Granite, South Eastern Desert, Egypt. Am. J. Appl. Ind. Chem. 2021, 5(1), 7-16. doi: 10.11648/j.ajaic.20210501.12

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    AMA Style

    Mohamed Soliman Nagar, Bayoumi Mostafa Bayoumi, Walid Mohamed Morsy. Characteristics and Evaluation of Leaching Behavior of Uranium Mineralization in Qash Amir Granite, South Eastern Desert, Egypt. Am J Appl Ind Chem. 2021;5(1):7-16. doi: 10.11648/j.ajaic.20210501.12

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  • @article{10.11648/j.ajaic.20210501.12,
      author = {Mohamed Soliman Nagar and Bayoumi Mostafa Bayoumi and Walid Mohamed Morsy},
      title = {Characteristics and Evaluation of Leaching Behavior of Uranium Mineralization in Qash Amir Granite, South Eastern Desert, Egypt},
      journal = {American Journal of Applied and Industrial Chemistry},
      volume = {5},
      number = {1},
      pages = {7-16},
      doi = {10.11648/j.ajaic.20210501.12},
      url = {https://doi.org/10.11648/j.ajaic.20210501.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaic.20210501.12},
      abstract = {In the Halaib area, South Eastern Desert, Egypt, numerous occurrences of uranium have been found. Uranium occurs as disseminated minerals (uraninite, uranophane, beta-uranophane) in G. Qash Amir muscovite monzogranite. The muscovite monzogranite (G. Qash Amir) is affected by deutric alteration and characterized by gradational contact with two-mica monzogranite, peraluminous in nature with visible primary and secondary uranium minerals, beryl and columbite. Uranium dissolution efficiency of 81.0 % was obtained using acid agitation leaching without oxidant addition, while dissolution efficiency increased to about 92% when ORP was increased to about 475mV using MnO2 as an oxidizing agent in Qash Amir uranium mineralization. Column tests were performed to study the effect of the parameters on uranium leaching and acid consumption. After 40 days of column leaching tests, uranium recovery of 74.2% was obtained at a flow rate of 10 l/m2/h and acid consumption was achieved by 26.2 kg per ton of ore. The addition of MnO2 as oxidant leads to a significant increase in the column leaching efficiency to 87% and decreasing acid consumption to 22kg per ton of ore in 35 days. The plot of 1-(1-x) 1/3 vs. t is linear and the R squared values for particle diffusion control line is 0.98, therefore the shrinking-core model is verified.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Characteristics and Evaluation of Leaching Behavior of Uranium Mineralization in Qash Amir Granite, South Eastern Desert, Egypt
    AU  - Mohamed Soliman Nagar
    AU  - Bayoumi Mostafa Bayoumi
    AU  - Walid Mohamed Morsy
    Y1  - 2021/03/22
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ajaic.20210501.12
    DO  - 10.11648/j.ajaic.20210501.12
    T2  - American Journal of Applied and Industrial Chemistry
    JF  - American Journal of Applied and Industrial Chemistry
    JO  - American Journal of Applied and Industrial Chemistry
    SP  - 7
    EP  - 16
    PB  - Science Publishing Group
    SN  - 2994-7294
    UR  - https://doi.org/10.11648/j.ajaic.20210501.12
    AB  - In the Halaib area, South Eastern Desert, Egypt, numerous occurrences of uranium have been found. Uranium occurs as disseminated minerals (uraninite, uranophane, beta-uranophane) in G. Qash Amir muscovite monzogranite. The muscovite monzogranite (G. Qash Amir) is affected by deutric alteration and characterized by gradational contact with two-mica monzogranite, peraluminous in nature with visible primary and secondary uranium minerals, beryl and columbite. Uranium dissolution efficiency of 81.0 % was obtained using acid agitation leaching without oxidant addition, while dissolution efficiency increased to about 92% when ORP was increased to about 475mV using MnO2 as an oxidizing agent in Qash Amir uranium mineralization. Column tests were performed to study the effect of the parameters on uranium leaching and acid consumption. After 40 days of column leaching tests, uranium recovery of 74.2% was obtained at a flow rate of 10 l/m2/h and acid consumption was achieved by 26.2 kg per ton of ore. The addition of MnO2 as oxidant leads to a significant increase in the column leaching efficiency to 87% and decreasing acid consumption to 22kg per ton of ore in 35 days. The plot of 1-(1-x) 1/3 vs. t is linear and the R squared values for particle diffusion control line is 0.98, therefore the shrinking-core model is verified.
    VL  - 5
    IS  - 1
    ER  - 

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Author Information
  • Nuclear Materials Authority, El Maadi, Cairo, Egypt

  • Nuclear Materials Authority, El Maadi, Cairo, Egypt

  • Nuclear Materials Authority, El Maadi, Cairo, Egypt

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