Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of Medium
An innovative self-designed medium was packed in a bench-scale flotation column to study its influence on the flotation recovery of bauxite. Computational fluid dynamics (CFD) simulation was conducted to reveal the impact of the packing medium on the turbulent characteristics of collection zone in t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/10/7/594 |
| _version_ | 1797563759480274944 |
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| author | Pengyu Zhang Wencai Zhang Leming Ou Yuteng Zhu Zicheng Zhu |
| author_facet | Pengyu Zhang Wencai Zhang Leming Ou Yuteng Zhu Zicheng Zhu |
| author_sort | Pengyu Zhang |
| collection | DOAJ |
| description | An innovative self-designed medium was packed in a bench-scale flotation column to study its influence on the flotation recovery of bauxite. Computational fluid dynamics (CFD) simulation was conducted to reveal the impact of the packing medium on the turbulent characteristics of collection zone in the column. Simulation results show that multilayer packing of the medium divides the collection zone into small units having different turbulent intensities, which is more suitable for flotation separation. The packing medium decreases the turbulence kinetic energy (from 1.08 × 10<sup>−2</sup> m<sup>2</sup>/s<sup>2</sup> to 2.1 × 10<sup>−3</sup> m<sup>2</sup>/s<sup>2</sup>), turbulence eddy dissipation (from 3.71 × 10<sup>−2</sup> m<sup>2</sup>/s<sup>3</sup> to 9.8 × 10<sup>−3</sup> m<sup>2</sup>/s<sup>3</sup>) and axial fluid velocity of fluid in the column. With three layers of packing, the recovery of Al<sub>2</sub>O<sub>3</sub> increased by 2.11% and the aluminum to silicon content ratio of the concentrate improved from 5.16 to 9.72. |
| first_indexed | 2024-03-10T18:47:52Z |
| format | Article |
| id | doaj.art-dc171455cd4c4c428103522809fbf8f8 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T18:47:52Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-dc171455cd4c4c428103522809fbf8f82023-11-20T05:23:21ZengMDPI AGMinerals2075-163X2020-06-0110759410.3390/min10070594Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of MediumPengyu Zhang0Wencai Zhang1Leming Ou2Yuteng Zhu3Zicheng Zhu4School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaDepartment of Mining and Minerals Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USASchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaSchool of Minerals Processing and Bioengineering, Central South University, Changsha 410083, ChinaAn innovative self-designed medium was packed in a bench-scale flotation column to study its influence on the flotation recovery of bauxite. Computational fluid dynamics (CFD) simulation was conducted to reveal the impact of the packing medium on the turbulent characteristics of collection zone in the column. Simulation results show that multilayer packing of the medium divides the collection zone into small units having different turbulent intensities, which is more suitable for flotation separation. The packing medium decreases the turbulence kinetic energy (from 1.08 × 10<sup>−2</sup> m<sup>2</sup>/s<sup>2</sup> to 2.1 × 10<sup>−3</sup> m<sup>2</sup>/s<sup>2</sup>), turbulence eddy dissipation (from 3.71 × 10<sup>−2</sup> m<sup>2</sup>/s<sup>3</sup> to 9.8 × 10<sup>−3</sup> m<sup>2</sup>/s<sup>3</sup>) and axial fluid velocity of fluid in the column. With three layers of packing, the recovery of Al<sub>2</sub>O<sub>3</sub> increased by 2.11% and the aluminum to silicon content ratio of the concentrate improved from 5.16 to 9.72.https://www.mdpi.com/2075-163X/10/7/594flotation columnmultilayer packingbauxiteCFD |
| spellingShingle | Pengyu Zhang Wencai Zhang Leming Ou Yuteng Zhu Zicheng Zhu Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of Medium Minerals flotation column multilayer packing bauxite CFD |
| title | Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of Medium |
| title_full | Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of Medium |
| title_fullStr | Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of Medium |
| title_full_unstemmed | Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of Medium |
| title_short | Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of Medium |
| title_sort | enhanced bauxite recovery using a flotation column packed with multilayers of medium |
| topic | flotation column multilayer packing bauxite CFD |
| url | https://www.mdpi.com/2075-163X/10/7/594 |
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