- Title
- Separation of coal with a top size of up to 6 mm in a full-scale REFLUX™ Classifier
- Creator
- Iveson, S. M.; Price, A.; Galvin, K. P.
- Relation
- International Journal of Coal Preparation and Utilization Vol. 42, Issue 3, p. 694-714
- Publisher Link
- http://dx.doi.org/10.1080/19392699.2019.1646255
- Publisher
- Taylor & Francis
- Resource Type
- journal article
- Date
- 2022
- Description
- A 2 m diameter REFLUX™ Classifier was tested on coal feeds up to 6 mm top size. Solids feed rate was varied from 50 to 160 t/h at suspension concentrations up to 37 wt.% solids. Performance was consistent, with product ashes below 10 wt.% for +1 mm particles and reject ashes usually exceeding 70 wt.%. The density cut point could be freely varied and decreased with particle size to the power −0.114. Ep values less than 0.10 were obtained on the composite +0.5 mm material. Ep varied with particle size to the power −0.963. Hence, beneficiation performance for −4.0 + 0.50 mm material approached that of large dense medium cyclones (DMCs). Hence, REFLUX™ Classifiers could be used to increase the capacity of existing plants with minimal capital expenditure. The primary screen aperture size could be raised to around 4 mm, which should significantly increase screen capacity. The +4.0 mm fraction could be sent to the existing DMC circuit, which with a lower fines loading would have increased capacity and medium recovery. The −4.0 mm fraction could be sent to a REFLUX™ Classifier and if required its overflow could then be sent to a flotation circuit.
- Subject
- REFLUX™ classifier; full scale; gravity separation; coal beneficiation; plant design
- Identifier
- http://hdl.handle.net/1959.13/1449224
- Identifier
- uon:43609
- Identifier
- ISSN:1939-2699
- Rights
- This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Coal Preparation and Utilization on 04/03/2022, available online: https://www.tandfonline.com/doi/full/10.1080/19392699.2019.1646255.
- Language
- eng
- Full Text
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