Bauxite residue sinter leach process – phases formation, reaction pathways and kinetics
Reactive silica in bauxite is a key challenge for the alumina industry due to the associated losses of sodium hydroxide and alumina associated with processing this impurity. The bauxite residue sinter leach process (BRSLP) is a potential method of recovering sodium hydroxide and alumina from bauxite...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
2019
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| Online Access: | http://hdl.handle.net/20.500.11937/77605 |
| _version_ | 1848763874053980160 |
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| author | Hodge, Harrison Rowles, Matthew Hayes, Peter C Hawker, William Vaughan, James |
| author_facet | Hodge, Harrison Rowles, Matthew Hayes, Peter C Hawker, William Vaughan, James |
| author_sort | Hodge, Harrison |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Reactive silica in bauxite is a key challenge for the alumina industry due to the associated losses of sodium hydroxide and alumina associated with processing this impurity. The bauxite residue sinter leach process (BRSLP) is a potential method of recovering sodium hydroxide and alumina from bauxite residue. In this research, bauxite residue lime sinters were characterised using a combination of quantitative X-ray diffraction in conjunction with scanning electron microscopy as well as for leaching performance. It is shown that sintering reactions proceed at a significantly faster rate than previously reported which has a positive implication for industrial application. A new set of reactions and reaction pathways are proposed which describe bauxite residue lime sintering in greater detail than previously possible. |
| first_indexed | 2025-11-14T11:10:23Z |
| format | Journal Article |
| id | curtin-20.500.11937-77605 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:10:23Z |
| publishDate | 2019 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-776052020-04-09T06:26:18Z Bauxite residue sinter leach process – phases formation, reaction pathways and kinetics Hodge, Harrison Rowles, Matthew Hayes, Peter C Hawker, William Vaughan, James Reactive silica in bauxite is a key challenge for the alumina industry due to the associated losses of sodium hydroxide and alumina associated with processing this impurity. The bauxite residue sinter leach process (BRSLP) is a potential method of recovering sodium hydroxide and alumina from bauxite residue. In this research, bauxite residue lime sinters were characterised using a combination of quantitative X-ray diffraction in conjunction with scanning electron microscopy as well as for leaching performance. It is shown that sintering reactions proceed at a significantly faster rate than previously reported which has a positive implication for industrial application. A new set of reactions and reaction pathways are proposed which describe bauxite residue lime sintering in greater detail than previously possible. 2019 Journal Article http://hdl.handle.net/20.500.11937/77605 10.1080/25726641.2019.1644778 restricted |
| spellingShingle | Hodge, Harrison Rowles, Matthew Hayes, Peter C Hawker, William Vaughan, James Bauxite residue sinter leach process – phases formation, reaction pathways and kinetics |
| title | Bauxite residue sinter leach process – phases formation, reaction pathways and kinetics |
| title_full | Bauxite residue sinter leach process – phases formation, reaction pathways and kinetics |
| title_fullStr | Bauxite residue sinter leach process – phases formation, reaction pathways and kinetics |
| title_full_unstemmed | Bauxite residue sinter leach process – phases formation, reaction pathways and kinetics |
| title_short | Bauxite residue sinter leach process – phases formation, reaction pathways and kinetics |
| title_sort | bauxite residue sinter leach process – phases formation, reaction pathways and kinetics |
| url | http://hdl.handle.net/20.500.11937/77605 |