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    Comparison of Physical Properties between Treated and Untreated Bauxite Residue Mud

    Source: Journal of Materials in Civil Engineering:;2007:;Volume ( 019 ):;issue: 001
    Author:
    Hamid R. Nikraz
    ,
    Andrew J. Bodley
    ,
    David J. Cooling
    ,
    P. Y. L. Kong
    ,
    Mahfooz Soomro
    DOI: 10.1061/(ASCE)0899-1561(2007)19:1(2)
    Publisher: American Society of Civil Engineers
    Abstract: Dry stacking is an improved method of storing bauxite residue mud, a by-product of the Bayer process in the alumina industry. Stacking has the potential to increase the density and stability of the residue deposit, reducing the costs associated with the construction of impoundment areas. Minimizing the land area exposed to the residue mud also reduces the possibility of groundwater contamination. The stored residue is alkaline and carries the potential for environmental impacts over the long term. Carbonation is being evaluated at Alcoa World Alumina Australia’s (Alcoa’s) Kwinana Refinery in Western Australia, as a means of neutralizing residue alkalinity. This paper details the physical characteristics exhibited by bauxite residue following treatment with carbonation and/or the addition of bitterns. The impact of residue carbonation and bitterns addition on the initial drainage and drying behavior of bauxite residues was evaluated. The long term consolidation properties of the residues and the impact of these chemical treatments on the overall stability of the deposit was also determined.
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      Comparison of Physical Properties between Treated and Untreated Bauxite Residue Mud

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    http://yetl.yabesh.ir/yetl1/handle/yetl/46215
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    contributor authorHamid R. Nikraz
    contributor authorAndrew J. Bodley
    contributor authorDavid J. Cooling
    contributor authorP. Y. L. Kong
    contributor authorMahfooz Soomro
    date accessioned2017-05-08T21:18:09Z
    date available2017-05-08T21:18:09Z
    date copyrightJanuary 2007
    date issued2007
    identifier other%28asce%290899-1561%282007%2919%3A1%282%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/46215
    description abstractDry stacking is an improved method of storing bauxite residue mud, a by-product of the Bayer process in the alumina industry. Stacking has the potential to increase the density and stability of the residue deposit, reducing the costs associated with the construction of impoundment areas. Minimizing the land area exposed to the residue mud also reduces the possibility of groundwater contamination. The stored residue is alkaline and carries the potential for environmental impacts over the long term. Carbonation is being evaluated at Alcoa World Alumina Australia’s (Alcoa’s) Kwinana Refinery in Western Australia, as a means of neutralizing residue alkalinity. This paper details the physical characteristics exhibited by bauxite residue following treatment with carbonation and/or the addition of bitterns. The impact of residue carbonation and bitterns addition on the initial drainage and drying behavior of bauxite residues was evaluated. The long term consolidation properties of the residues and the impact of these chemical treatments on the overall stability of the deposit was also determined.
    publisherAmerican Society of Civil Engineers
    titleComparison of Physical Properties between Treated and Untreated Bauxite Residue Mud
    typeJournal Paper
    journal volume19
    journal issue1
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)0899-1561(2007)19:1(2)
    treeJournal of Materials in Civil Engineering:;2007:;Volume ( 019 ):;issue: 001
    contenttypeFulltext
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