- Title
- Gravity separation of ultra-fine iron ore in the REFLUX™ Classifier
- Creator
- Hunter, D. M.; Zhou, J.; Iveson, S. M.; Galvin, K. P.
- Relation
- ARC
- Relation
- Institute of Materials, Minerals and Mining. Transactions. Section C: Mineral Processing and Extractive Metallurgy Vol. 125, Issue 3, p. 126-131
- Publisher Link
- http://dx.doi.org/10.1080/03719553.2016.1155687
- Publisher
- Taylor & Francis
- Resource Type
- journal article
- Date
- 2016
- Description
- The REFLUX™ Classifier is a recently developed water-based gravity separation technology that is already being used worldwide to beneficiate particles above 0.100 mm in size. This paper reports tests performed on an ultra-fine iron ore with nominal top size of 0.106 mm, but with 59 wt-% being below 0.038 mm in size. The REFLUX™ Classifier consists of a set of parallel inclined channels positioned above a vertical fluidised section. The Boycott effect generates a powerful throughput advantage and using narrow channels gives a high shear rate which generates a hydrodynamic lift force that helps to selectively re-suspend and elutriate the lower-density particles. The iron ore feed had a head grade of 35 wt-% FeT. At a low feed solids mass flux of 1.5 t m−2 h−1, the REFLUX™ Classifier produced high-grade products at a high recovery. Overall a grade of 66.1 wt-% FeT with Fe recovery of 80 wt-% could be achieved in a single-stage separation. Within the 0.020–0.038 mm size fraction, grades of 68.8 wt-% FeT were achieved with iron recoveries of 94.7 wt-%. Excellent recoveries of up to 57.0 wt-% were achieved even for the −0.020 mm size fraction.
- Subject
- REFLUX™ Classifier; iron ore; beneficiation; ultra fine; density separation
- Identifier
- http://hdl.handle.net/1959.13/1347489
- Identifier
- uon:30048
- Identifier
- ISSN:0371-9553
- Language
- eng
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