The behaviour of free gold particles in a simulated flash flotation environment
A reliable laboratory method to characterize the response of free gold particles to flash flotation conditions has been developed. The test has been performed on free milling gold ores as well as synthetic ores, using either a gravity concentrate or gold powder as the gold source, to assess the floa...
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| Format: | Journal Article |
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Southern African Institute of Mining and Metallurgy
2015
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| Online Access: | http://www.saimm.co.za/Journal/v115n02p103.pdf http://hdl.handle.net/20.500.11937/37446 |
| _version_ | 1848755049786769408 |
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| author | McGrath, Teresa Eksteen, Jacques Heath, J. |
| author_facet | McGrath, Teresa Eksteen, Jacques Heath, J. |
| author_sort | McGrath, Teresa |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A reliable laboratory method to characterize the response of free gold particles to flash flotation conditions has been developed. The test has been performed on free milling gold ores as well as synthetic ores, using either a gravity concentrate or gold powder as the gold source, to assess the floatability of gold particles. Trends in free gold flotation kinetics, as well as size and milling effects, were identified for gold recovery based on the different feed types, reagent dosages, and residence times. It was shown that the ultimate recoveries and kinetic trends of gold particles from the gravity concentrate could be enhanced with increased dosage of collector, potassium amyl xanthate. Interestingly, in comparison to gravity-recoverable gold, recovery from pure Au powders was better in collectorless flotation, and cumulative recovery decreased with higher levels of collector addition. Improved coarse particle recovery appeared linked to increased collector additions for both the gravity concentrate and the pure gold powders. In general, coarse gold particles demonstrated slower kinetic rates than the fine or intermediate components incomparable tests. |
| first_indexed | 2025-11-14T08:50:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-37446 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:50:08Z |
| publishDate | 2015 |
| publisher | Southern African Institute of Mining and Metallurgy |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-374462017-01-30T14:03:18Z The behaviour of free gold particles in a simulated flash flotation environment McGrath, Teresa Eksteen, Jacques Heath, J. flotation natural hydrophobicity flash flotation gold kinetics A reliable laboratory method to characterize the response of free gold particles to flash flotation conditions has been developed. The test has been performed on free milling gold ores as well as synthetic ores, using either a gravity concentrate or gold powder as the gold source, to assess the floatability of gold particles. Trends in free gold flotation kinetics, as well as size and milling effects, were identified for gold recovery based on the different feed types, reagent dosages, and residence times. It was shown that the ultimate recoveries and kinetic trends of gold particles from the gravity concentrate could be enhanced with increased dosage of collector, potassium amyl xanthate. Interestingly, in comparison to gravity-recoverable gold, recovery from pure Au powders was better in collectorless flotation, and cumulative recovery decreased with higher levels of collector addition. Improved coarse particle recovery appeared linked to increased collector additions for both the gravity concentrate and the pure gold powders. In general, coarse gold particles demonstrated slower kinetic rates than the fine or intermediate components incomparable tests. 2015 Journal Article http://hdl.handle.net/20.500.11937/37446 http://www.saimm.co.za/Journal/v115n02p103.pdf Southern African Institute of Mining and Metallurgy fulltext |
| spellingShingle | flotation natural hydrophobicity flash flotation gold kinetics McGrath, Teresa Eksteen, Jacques Heath, J. The behaviour of free gold particles in a simulated flash flotation environment |
| title | The behaviour of free gold particles in a simulated flash flotation environment |
| title_full | The behaviour of free gold particles in a simulated flash flotation environment |
| title_fullStr | The behaviour of free gold particles in a simulated flash flotation environment |
| title_full_unstemmed | The behaviour of free gold particles in a simulated flash flotation environment |
| title_short | The behaviour of free gold particles in a simulated flash flotation environment |
| title_sort | behaviour of free gold particles in a simulated flash flotation environment |
| topic | flotation natural hydrophobicity flash flotation gold kinetics |
| url | http://www.saimm.co.za/Journal/v115n02p103.pdf http://hdl.handle.net/20.500.11937/37446 |