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Aluminium production route through carbosulfidation of alumina utilising H2S

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conference contribution
posted on 2024-07-13, 02:40 authored by Nazmul Huda, Akbar RhamdhaniAkbar Rhamdhani, Geoffrey BrooksGeoffrey Brooks, B. J. Monaghan, L. Prentice
Indirect carbothermal reduction of alumina for the production of aluminum utilizes different reducing agents to convert alumina into intermediate aluminum compounds. In the present study, the carbosulfidation route for aluminum production utilizing H2S(g) as the reductant and sulfur source has been investigated, in particular the formation of Al2S3 in the first step of the process. The results of the thermodynamic analysis predicted that conversion of Al2O3(s) to Al2S3(l) significantly increases above 1400°C at 1 atmosphere pressure. Experimental investigations were carried out at temperatures of 1100 to 1500°C using dilute H2S(g) gas in argon. The reaction products were analyzed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), inductively-coupled plasma absorption emission spectroscopy (ICP-AES) and chemical filtration. The X-ray diffraction results confirmed the presence of Al2S3(s). Percentage of conversion from Al2O3to Al2S3 was found to be over 80% at 1500°C.

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ISBN

9780987177261

Journal title

5th High Temperature Processing Symposium 2013 (HTP 2013), Melbourne, Victoria, Australia, 04-05 February 2013 / M. Akbar Rhamdhani, Geoffrey Brooks and Abdul Khaliq (eds.)

Conference name

5th High Temperature Processing Symposium 2013 HTP 2013, Melbourne, Victoria, Australia, 04-05 February 2013 / M. Akbar Rhamdhani, Geoffrey Brooks and Abdul Khaliq eds.

Pagination

2 pp

Publisher

Swinburne University of Technology

Copyright statement

Copyright © 2013 Swinburne University of Technology.

Language

eng

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