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Fine Bauxite Recovery Using a Plate-Packed Flotation Column
- Source :
- Metals, Vol 10, Iss 9, p 1184 (2020)
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- In this investigation, the fine-grained bauxite ore flotation was conducted in a plate-packed flotation column. This paper evaluated the effects of packing-plates on recovering fine bauxite particles and revealed the fundamental mechanisms. Bubble coalescence and break-up behaviors in the packed and unpacked flotation columns were characterized by combining Computational Fluid Dynamics (CFD) and Population Balance Model (PBM) techniques. Flotation experiments showed that packing-plates in the collection zone of a column can improve bauxite flotation performance and increase the smaller bauxite particles recovery. Using packing-plates, the recovery of Al2O3 increased by 2.11%, and the grade of Al2O3 increased by 1.85%. The fraction of −20 μm mineral particles in concentrate increased from 47.31% to 54.79%. CFD simulation results indicated that the packing-plates optimized the bubble distribution characteristics and increased the proportion of microbubbles in the flotation column, which contributed to improving the capture probability of fine bauxite particles.
Details
- Language :
- English
- ISSN :
- 20754701
- Volume :
- 10
- Issue :
- 9
- Database :
- Directory of Open Access Journals
- Journal :
- Metals
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.7d3c9700394e1db8e43b49d0bfe7a0
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/met10091184