The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 C
Many of the bauxites currently being processed to alumina contain titanium minerals, yet little fundamental knowledge is available regarding their dissolution behaviour in Bayer liquors. In this paper the dissolution of various titanium oxide phases (anatase, rutile, sodium titanate and calcium tita...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/28571 |
| _version_ | 1848752573595516928 |
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| author | Chester, Ryan Jones, Franca Loan, Mitch Oliveira, Allan Richmond, William |
| author_facet | Chester, Ryan Jones, Franca Loan, Mitch Oliveira, Allan Richmond, William |
| author_sort | Chester, Ryan |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Many of the bauxites currently being processed to alumina contain titanium minerals, yet little fundamental knowledge is available regarding their dissolution behaviour in Bayer liquors. In this paper the dissolution of various titanium oxide phases (anatase, rutile, sodium titanate and calcium titanate) are presented. It is shown that rutile, calcium titanate and sodium titanate have the expected dissolution behaviour, which increases with free caustic concentration. Anatase, too, generally increases in dissolution with free caustic concentration. However, anatase is shown to have an anomalous behaviour when gibbsite co-precipitates. In this case, the dissolution of anatase does not follow the expected free caustic trend. According to the data presented, the most probable cause is an impervious aluminium/sodium titanate surface layer hindering further dissolution. |
| first_indexed | 2025-11-14T08:10:46Z |
| format | Journal Article |
| id | curtin-20.500.11937-28571 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:10:46Z |
| publishDate | 2009 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-285712018-10-03T07:27:51Z The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 C Chester, Ryan Jones, Franca Loan, Mitch Oliveira, Allan Richmond, William Bayer process calcium titanate anatase dissolution behaviour rutile sodium titanate Many of the bauxites currently being processed to alumina contain titanium minerals, yet little fundamental knowledge is available regarding their dissolution behaviour in Bayer liquors. In this paper the dissolution of various titanium oxide phases (anatase, rutile, sodium titanate and calcium titanate) are presented. It is shown that rutile, calcium titanate and sodium titanate have the expected dissolution behaviour, which increases with free caustic concentration. Anatase, too, generally increases in dissolution with free caustic concentration. However, anatase is shown to have an anomalous behaviour when gibbsite co-precipitates. In this case, the dissolution of anatase does not follow the expected free caustic trend. According to the data presented, the most probable cause is an impervious aluminium/sodium titanate surface layer hindering further dissolution. 2009 Journal Article http://hdl.handle.net/20.500.11937/28571 10.1016/j.hydromet.2008.10.009 Elsevier fulltext |
| spellingShingle | Bayer process calcium titanate anatase dissolution behaviour rutile sodium titanate Chester, Ryan Jones, Franca Loan, Mitch Oliveira, Allan Richmond, William The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 C |
| title | The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 C |
| title_full | The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 C |
| title_fullStr | The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 C |
| title_full_unstemmed | The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 C |
| title_short | The dissolution behaviour of titanium oxide phases in synthetic Bayer liquors at 90 C |
| title_sort | dissolution behaviour of titanium oxide phases in synthetic bayer liquors at 90 c |
| topic | Bayer process calcium titanate anatase dissolution behaviour rutile sodium titanate |
| url | http://hdl.handle.net/20.500.11937/28571 |