- Title
- Multistage gravity separation of dense minerals using the REFLUX TM classifier
- Creator
- Hunter, D. M.; Lowes, C. P.; Zhou, J.; Iveson, S. M.; Galvin, K. P.
- Relation
- 29th International Mineral Processing Congress (IMPC 2018). Proceedings of the 29th International Mineral Processing Congress (IMPC 2018), Volume 3 (Moscow, Russia 17-21 September, 2018) p. 2274-2287
- Publisher
- International Agency of Congress Management (MAKO LLC)
- Resource Type
- conference paper
- Date
- 2019
- Description
- The REFLUXTM Classifier (RCTM) consists of a fluidized bed housing, with a system of parallel inclined channels above. This system performs a simultaneous gravity separation and desliming of the feed material, utilising the inclined channels in order to retain the relatively fine dense particles. These particles promote the formation of an autogenous dense medium within the fluidized bed. Relatively large, low density particles are displaced from the fluidized bed and conveyed upwards through the inclined channels reporting to the overflow with other finer particles. Given the hydrodynamic role of both the particle size and density in determining the particle transport through a water based suspension, all gravity separators operate over a limited size range. In the case of the REFLUXTM Classifier, efficient separations can be produced across a very broad size range, from nearly 10 mm down to 10 m, however, for a given application the size range is much more limited. This study was concerned with the processing of dense minerals over a broad size range, and the need for multistage processing. Here the overflow from the first stage cascades to the second stage, incorporating coarse gangue rejection. This approach is shown to deliver remarkably high grades and recovery.
- Subject
- gravity separation; desliming; reflux classifier; inclined channels; dense minerals; fluidization
- Identifier
- http://hdl.handle.net/1959.13/1459871
- Identifier
- uon:45803
- Identifier
- ISBN:9781510874992
- Language
- eng
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