Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation With Octyl Hydroxamate as the Collector
Froth flotation of fine minerals has always been an important research direction in terms of theory and practice. In this paper, the effect and mechanism of Fe3+ on improving surface hydrophobicity and flotation of fine monazite using sodium octyl hydroxamate (SOH) as a collector were investigated t...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-07-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2021.700347/full |
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| author | Qingzhu Zheng Yunlou Qian Yunlou Qian Dan Zou Zhen Wang Zhen Wang Yang Bai Haidong Dai |
| author_facet | Qingzhu Zheng Yunlou Qian Yunlou Qian Dan Zou Zhen Wang Zhen Wang Yang Bai Haidong Dai |
| author_sort | Qingzhu Zheng |
| collection | DOAJ |
| description | Froth flotation of fine minerals has always been an important research direction in terms of theory and practice. In this paper, the effect and mechanism of Fe3+ on improving surface hydrophobicity and flotation of fine monazite using sodium octyl hydroxamate (SOH) as a collector were investigated through a series of laboratory tests and detection measurements including microflotation, fluorescence spectrum, zeta potential, and X-ray photoelectron spectroscopy (XPS). Flotation tests have shown that fine monazite particles (−26 + 15 μm) cannot be floated well with the SOH collector compared to the coarse fraction (−74 + 38 μm). However, adding a small amount of Fe3+ to the pulp before SOH can significantly improve the flotation of fine monazite. This is because the addition of Fe3+ promotes the adsorption of SOH and greatly improves the hydrophobicity of the monazite surface. This can result in the formation of a more uniform and dense hydrophobic adsorption layer, as shown by the fluorescence spectrum and zeta potential results. From the XPS results, Fe3+ reacts with surface O atoms on the surface of monazite to form a monazite–Osurf–Fe group that acts as a new additional active site for SOH adsorption. A schematic model was also proposed to explain the mechanism of Fe3+ for improving surface hydrophobicity and flotation of fine monazite using octyl hydroxamate as a collector. The innovative point of this study is using a simple reagent scheme to float fine mineral particles rather than traditional complex processes. |
| first_indexed | 2024-12-14T17:51:09Z |
| format | Article |
| id | doaj.art-0b40d26bfc10429f8c7537392bb7ee28 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-14T17:51:09Z |
| publishDate | 2021-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-0b40d26bfc10429f8c7537392bb7ee282022-12-21T22:52:37ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462021-07-01910.3389/fchem.2021.700347700347Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation With Octyl Hydroxamate as the CollectorQingzhu Zheng0Yunlou Qian1Yunlou Qian2Dan Zou3Zhen Wang4Zhen Wang5Yang Bai6Haidong Dai7Intelligent Safe Collaborative Innovation Center, Zhejiang College of Security Technology, Wenzhou, ChinaIntelligent Safe Collaborative Innovation Center, Zhejiang College of Security Technology, Wenzhou, ChinaKey Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang, ChinaKey Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang, ChinaIntelligent Safe Collaborative Innovation Center, Zhejiang College of Security Technology, Wenzhou, ChinaKey Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang, ChinaMechanical and Electronic Engineering Institute, Wenzhou University of Technology, Wenzhou, ChinaIntelligent Safe Collaborative Innovation Center, Zhejiang College of Security Technology, Wenzhou, ChinaFroth flotation of fine minerals has always been an important research direction in terms of theory and practice. In this paper, the effect and mechanism of Fe3+ on improving surface hydrophobicity and flotation of fine monazite using sodium octyl hydroxamate (SOH) as a collector were investigated through a series of laboratory tests and detection measurements including microflotation, fluorescence spectrum, zeta potential, and X-ray photoelectron spectroscopy (XPS). Flotation tests have shown that fine monazite particles (−26 + 15 μm) cannot be floated well with the SOH collector compared to the coarse fraction (−74 + 38 μm). However, adding a small amount of Fe3+ to the pulp before SOH can significantly improve the flotation of fine monazite. This is because the addition of Fe3+ promotes the adsorption of SOH and greatly improves the hydrophobicity of the monazite surface. This can result in the formation of a more uniform and dense hydrophobic adsorption layer, as shown by the fluorescence spectrum and zeta potential results. From the XPS results, Fe3+ reacts with surface O atoms on the surface of monazite to form a monazite–Osurf–Fe group that acts as a new additional active site for SOH adsorption. A schematic model was also proposed to explain the mechanism of Fe3+ for improving surface hydrophobicity and flotation of fine monazite using octyl hydroxamate as a collector. The innovative point of this study is using a simple reagent scheme to float fine mineral particles rather than traditional complex processes.https://www.frontiersin.org/articles/10.3389/fchem.2021.700347/fullmonazitefine particlesFe3+flotationhydroxamate |
| spellingShingle | Qingzhu Zheng Yunlou Qian Yunlou Qian Dan Zou Zhen Wang Zhen Wang Yang Bai Haidong Dai Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation With Octyl Hydroxamate as the Collector Frontiers in Chemistry monazite fine particles Fe3+ flotation hydroxamate |
| title | Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation With Octyl Hydroxamate as the Collector |
| title_full | Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation With Octyl Hydroxamate as the Collector |
| title_fullStr | Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation With Octyl Hydroxamate as the Collector |
| title_full_unstemmed | Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation With Octyl Hydroxamate as the Collector |
| title_short | Surface Mechanism of Fe3+ Ions on the Improvement of Fine Monazite Flotation With Octyl Hydroxamate as the Collector |
| title_sort | surface mechanism of fe3 ions on the improvement of fine monazite flotation with octyl hydroxamate as the collector |
| topic | monazite fine particles Fe3+ flotation hydroxamate |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2021.700347/full |
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