The impact of desilication products on the flocculation and sedimentation properties of bauxite residue
In the Bayer processing of bauxite, dissolved silica re-precipitates as aluminosilicates or desilication products (DSPs) that adversely affect residue separation by flocculation and thickening prior to product precipitation. DSP was shown to form at the surface of hematite, impacting upon the extent...
| Main Author: | |
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| Format: | Thesis |
| Language: | English |
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Curtin University
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/1522 |
| _version_ | 1848743691095638016 |
|---|---|
| author | Senaputra, Alexander |
| author_facet | Senaputra, Alexander |
| author_sort | Senaputra, Alexander |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In the Bayer processing of bauxite, dissolved silica re-precipitates as aluminosilicates or desilication products (DSPs) that adversely affect residue separation by flocculation and thickening prior to product precipitation. DSP was shown to form at the surface of hematite, impacting upon the extent, efficiency and mechanism of aggregation with a number of different polymer reagents. Real-time measurement of aggregate properties provided new insights on fines capture. The practical implications for full-scale feedwell flocculation were explored. |
| first_indexed | 2025-11-14T05:49:35Z |
| format | Thesis |
| id | curtin-20.500.11937-1522 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T05:49:35Z |
| publishDate | 2014 |
| publisher | Curtin University |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-15222017-02-20T06:38:09Z The impact of desilication products on the flocculation and sedimentation properties of bauxite residue Senaputra, Alexander In the Bayer processing of bauxite, dissolved silica re-precipitates as aluminosilicates or desilication products (DSPs) that adversely affect residue separation by flocculation and thickening prior to product precipitation. DSP was shown to form at the surface of hematite, impacting upon the extent, efficiency and mechanism of aggregation with a number of different polymer reagents. Real-time measurement of aggregate properties provided new insights on fines capture. The practical implications for full-scale feedwell flocculation were explored. 2014 Thesis http://hdl.handle.net/20.500.11937/1522 en Curtin University fulltext |
| spellingShingle | Senaputra, Alexander The impact of desilication products on the flocculation and sedimentation properties of bauxite residue |
| title | The impact of desilication products on the flocculation and sedimentation properties of bauxite residue |
| title_full | The impact of desilication products on the flocculation and sedimentation properties of bauxite residue |
| title_fullStr | The impact of desilication products on the flocculation and sedimentation properties of bauxite residue |
| title_full_unstemmed | The impact of desilication products on the flocculation and sedimentation properties of bauxite residue |
| title_short | The impact of desilication products on the flocculation and sedimentation properties of bauxite residue |
| title_sort | impact of desilication products on the flocculation and sedimentation properties of bauxite residue |
| url | http://hdl.handle.net/20.500.11937/1522 |