- Title
- Separation of ultra-fine particles using the REFLUX™ Graviton
- Creator
- Carpenter, J. L.; Iveson, S. M.; Galvin, K. P.
- Relation
- Iron Ore 2017. Iron Ore 2017: Building Resilience: Proceedings (Perth, W.A. 24-26 July, 2017) p. 141-148
- Relation
- https://www.ausimm.com.au/publications/publication.aspx?ID=17217
- Publisher
- Australasian Institute of Mining and Metallurgy (AusIMM)
- Resource Type
- conference paper
- Date
- 2017
- Description
- Wet beneficiation of iron ore fines less than 1 mm typically involves a desliming stage ahead of the fine gravity separation such as spirals. The desliming is achieved using a bank of cyclones. The reject ultra-fines emerge in the overflow stream at relatively low pulp density, contain high proportions of low-value slimes, but also well-liberated iron ore ultra-fines below 0.045 mm in size; however, recovering the valuable iron ore ultra-fines from this overflow stream presents a significant challenge due to the need to remove such a large amount of water and slimes. The REFLUX™ Graviton consists of distinct 3D-printed modular units, based on REFLUX™ Classifiers, which are rotated at high speed in a large centrifuge. This system has previously been investigated under semi-batch conditions, demonstrating the potential for precision separations with significant capacity. It has been shown that the throughput advantage of the inclined channels and G forces multiply. This is the first paper presented showing the performance of this system under continuous steady-state conditions. Ultra-fine silica in the size range of 0 to 0.045 mm was fed to the Graviton at different volumetric rates, fluidisation rates and pulp densities ranging from 2 wt per cent to 30 wt per cent, in order to develop a fundamental understanding of the system's performance. Experiments were then repeated using ultra-fine iron ore.
- Subject
- reprocessing; old tailings; fine gravity separation; iron ore
- Identifier
- http://hdl.handle.net/1959.13/1389457
- Identifier
- uon:32887
- Identifier
- ISBN:9781925100587
- Language
- eng
- Full Text
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