The effect of microwave pretreatment on the liberation of a copper carbonate ore after milling
The effects of microwave treatment on the liberation spectrum of a rod-milled South African carbonatite ore are presented based on quantitative mineralogical analysis. The treated ore was processed for 0.5 s at 10.5 kW in a single mode microwave cavity in batches of 1 kg. The ore selected for microw...
| Main Authors: | , , |
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| Format: | Journal Article |
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Elsevier
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/17311 |
| _version_ | 1848749431876222976 |
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| author | Scott, G. Bradshaw, S. Eksteen, Jacques |
| author_facet | Scott, G. Bradshaw, S. Eksteen, Jacques |
| author_sort | Scott, G. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The effects of microwave treatment on the liberation spectrum of a rod-milled South African carbonatite ore are presented based on quantitative mineralogical analysis. The treated ore was processed for 0.5 s at 10.5 kW in a single mode microwave cavity in batches of 1 kg. The ore selected for microwave treatment was a sample from a tertiary crusher product stream feed to a rod mill. The treated and untreated ore were subsequently grinded to 80%–800 µm. The microwave treated ore showed a significant increase in the amount of liberated copper minerals in the relatively coarse particle size range (106 to 300 µm). Similar significant shifts in the liberation spectra were noted for all the minerals in the ore. It is inferred that microwave treatment induces changes in the fracture pattern, favouring liberation of microwave susceptible minerals at larger particle sizes. |
| first_indexed | 2025-11-14T07:20:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-17311 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:20:50Z |
| publishDate | 2008 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-173112017-09-13T15:42:23Z The effect of microwave pretreatment on the liberation of a copper carbonate ore after milling Scott, G. Bradshaw, S. Eksteen, Jacques Comminution Minerals processing Microwave treatment Liberation The effects of microwave treatment on the liberation spectrum of a rod-milled South African carbonatite ore are presented based on quantitative mineralogical analysis. The treated ore was processed for 0.5 s at 10.5 kW in a single mode microwave cavity in batches of 1 kg. The ore selected for microwave treatment was a sample from a tertiary crusher product stream feed to a rod mill. The treated and untreated ore were subsequently grinded to 80%–800 µm. The microwave treated ore showed a significant increase in the amount of liberated copper minerals in the relatively coarse particle size range (106 to 300 µm). Similar significant shifts in the liberation spectra were noted for all the minerals in the ore. It is inferred that microwave treatment induces changes in the fracture pattern, favouring liberation of microwave susceptible minerals at larger particle sizes. 2008 Journal Article http://hdl.handle.net/20.500.11937/17311 10.1016/j.minpro.2007.08.005 Elsevier restricted |
| spellingShingle | Comminution Minerals processing Microwave treatment Liberation Scott, G. Bradshaw, S. Eksteen, Jacques The effect of microwave pretreatment on the liberation of a copper carbonate ore after milling |
| title | The effect of microwave pretreatment on the liberation of a copper carbonate ore after milling |
| title_full | The effect of microwave pretreatment on the liberation of a copper carbonate ore after milling |
| title_fullStr | The effect of microwave pretreatment on the liberation of a copper carbonate ore after milling |
| title_full_unstemmed | The effect of microwave pretreatment on the liberation of a copper carbonate ore after milling |
| title_short | The effect of microwave pretreatment on the liberation of a copper carbonate ore after milling |
| title_sort | effect of microwave pretreatment on the liberation of a copper carbonate ore after milling |
| topic | Comminution Minerals processing Microwave treatment Liberation |
| url | http://hdl.handle.net/20.500.11937/17311 |