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Alternative Al production methods: Part 2 – thermodynamic analyses of indirect carbothermal routes

Journal Article


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Abstract


  • It has been widely claimed that direct and indirect carbothermic reduction of alumina for the

    production of aluminium have the potential to consume less energy, generate fewer

    perfluorocarbons and have lower total greenhouse gas emissions compared to the Hall–He´ roult

    process. A review of alternative aluminium production techniques focusing on the indirect

    carbothermal reduction routes has been presented in the Part 1 paper. In this Part 2 paper,

    systematic thermodynamic analyses of indirect carbothermal reduction routes are presented.

    These include the analyses of the Stage 1 of the process where alumina is converted to

    intermediate aluminium compounds before they are further reduced to aluminium metal in the

    subsequent stages. The results suggested that in the Stage 1, high alumina conversion at the

    process conditions studied can be achieved through three process routes: halide (chloride),

    nitride and sulphide routes. Thermodynamic analyses were also carried out for the Stage 2 where

    the intermediate aluminium nitride, chlorides or sulphides are reduced to aluminium through

    thermal dissociation, thermal disproportionation and/or electrolysis. Analysis of the results

    suggests aluminium may be extracted from AlN using thermal dissociation, while disproportionation

    and electrolysis are more suitable for AlCl3 and Al2S3.

Authors


  •   Rhamdhani, Muhammad A. (external author)
  •   Dewan, Mohammad A. (external author)
  •   Brooks, Geoffrey A. (external author)
  •   Monaghan, Brian J.
  •   Prentice, Leon (external author)

Publication Date


  • 2013

Citation


  • Rhamdhani, M. A., Dewan, M. A., Brooks, G. A., Monaghan, B. J. & Prentice, L. (2013). Alternative Al production methods: Part 2 – thermodynamic analyses of indirect carbothermal routes. Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy, 122 (2), 113-121.

Scopus Eid


  • 2-s2.0-84881104376

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2114&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1105

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 113

End Page


  • 121

Volume


  • 122

Issue


  • 2

Place Of Publication


  • United Kingdom

Abstract


  • It has been widely claimed that direct and indirect carbothermic reduction of alumina for the

    production of aluminium have the potential to consume less energy, generate fewer

    perfluorocarbons and have lower total greenhouse gas emissions compared to the Hall–He´ roult

    process. A review of alternative aluminium production techniques focusing on the indirect

    carbothermal reduction routes has been presented in the Part 1 paper. In this Part 2 paper,

    systematic thermodynamic analyses of indirect carbothermal reduction routes are presented.

    These include the analyses of the Stage 1 of the process where alumina is converted to

    intermediate aluminium compounds before they are further reduced to aluminium metal in the

    subsequent stages. The results suggested that in the Stage 1, high alumina conversion at the

    process conditions studied can be achieved through three process routes: halide (chloride),

    nitride and sulphide routes. Thermodynamic analyses were also carried out for the Stage 2 where

    the intermediate aluminium nitride, chlorides or sulphides are reduced to aluminium through

    thermal dissociation, thermal disproportionation and/or electrolysis. Analysis of the results

    suggests aluminium may be extracted from AlN using thermal dissociation, while disproportionation

    and electrolysis are more suitable for AlCl3 and Al2S3.

Authors


  •   Rhamdhani, Muhammad A. (external author)
  •   Dewan, Mohammad A. (external author)
  •   Brooks, Geoffrey A. (external author)
  •   Monaghan, Brian J.
  •   Prentice, Leon (external author)

Publication Date


  • 2013

Citation


  • Rhamdhani, M. A., Dewan, M. A., Brooks, G. A., Monaghan, B. J. & Prentice, L. (2013). Alternative Al production methods: Part 2 – thermodynamic analyses of indirect carbothermal routes. Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy, 122 (2), 113-121.

Scopus Eid


  • 2-s2.0-84881104376

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2114&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1105

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 113

End Page


  • 121

Volume


  • 122

Issue


  • 2

Place Of Publication


  • United Kingdom