Novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3
© 2017 Institute of Materials, Minerals and Mining and The AusIMM Published by Taylor & Francis on behalf of the Institute and The AusIMMA novel multi-stage Al production through a carbosulphidation of Al2O3, followed by a sodiothermic reduction of Al2S3, was proposed. In Stage-1, alumina (or ba...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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Maney Publishing
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/52048 |
| _version_ | 1848758831810609152 |
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| author | Rhamdhani, M. Huda, N. Khaliq, A. Brooks, G. Monaghan, B. Sheppard, Drew Prentice, L. |
| author_facet | Rhamdhani, M. Huda, N. Khaliq, A. Brooks, G. Monaghan, B. Sheppard, Drew Prentice, L. |
| author_sort | Rhamdhani, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 Institute of Materials, Minerals and Mining and The AusIMM Published by Taylor & Francis on behalf of the Institute and The AusIMMA novel multi-stage Al production through a carbosulphidation of Al2O3, followed by a sodiothermic reduction of Al2S3, was proposed. In Stage-1, alumina (or bauxite) is reduced to Al2S3 in the presence of carbon and H2S. In Stage-2, Al2S3 is reduced to Al through reactions with Na or NaH. The thermodynamic analysis predicted Al2S3 to be the main intermediate Al-compound when H2S is reacted with Al2S3 and C at 1000-2000°C at 1 atm. Al2S3 formation was predicted to be low at 1100-1300°C at 1 atm (0.1 moles/mole Al2O3) but increased with increasing temperature (0.96 moles/mole Al2O3 at 1800°C). The thermodynamic analysis of sodiothermic reduction predicted that Al metal can be extracted from Al2S3 below 800°C at 1 atm. The Na2S produced can be hydrolysed to form H2S and NaOH. H2S can be re-used and the Na can be reproduced from NaOH and put back into the process. |
| first_indexed | 2025-11-14T09:50:15Z |
| format | Journal Article |
| id | curtin-20.500.11937-52048 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:50:15Z |
| publishDate | 2017 |
| publisher | Maney Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-520482023-08-02T06:39:08Z Novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3 Rhamdhani, M. Huda, N. Khaliq, A. Brooks, G. Monaghan, B. Sheppard, Drew Prentice, L. © 2017 Institute of Materials, Minerals and Mining and The AusIMM Published by Taylor & Francis on behalf of the Institute and The AusIMMA novel multi-stage Al production through a carbosulphidation of Al2O3, followed by a sodiothermic reduction of Al2S3, was proposed. In Stage-1, alumina (or bauxite) is reduced to Al2S3 in the presence of carbon and H2S. In Stage-2, Al2S3 is reduced to Al through reactions with Na or NaH. The thermodynamic analysis predicted Al2S3 to be the main intermediate Al-compound when H2S is reacted with Al2S3 and C at 1000-2000°C at 1 atm. Al2S3 formation was predicted to be low at 1100-1300°C at 1 atm (0.1 moles/mole Al2O3) but increased with increasing temperature (0.96 moles/mole Al2O3 at 1800°C). The thermodynamic analysis of sodiothermic reduction predicted that Al metal can be extracted from Al2S3 below 800°C at 1 atm. The Na2S produced can be hydrolysed to form H2S and NaOH. H2S can be re-used and the Na can be reproduced from NaOH and put back into the process. 2017 Journal Article http://hdl.handle.net/20.500.11937/52048 10.1080/03719553.2017.1293352 Maney Publishing restricted |
| spellingShingle | Rhamdhani, M. Huda, N. Khaliq, A. Brooks, G. Monaghan, B. Sheppard, Drew Prentice, L. Novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3 |
| title | Novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3 |
| title_full | Novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3 |
| title_fullStr | Novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3 |
| title_full_unstemmed | Novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3 |
| title_short | Novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3 |
| title_sort | novel multi-stage aluminium production: part 1 � thermodynamic assessment of carbosulphidation of al2o3/bauxite using h2s and sodiothermic reduction of al2s3 |
| url | http://hdl.handle.net/20.500.11937/52048 |