Effects of Al(III) Ions at Magnetite Flotation from Quartz by Dodecylamine Al(III)
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Reagents
2.2. Micro-Flotation Experiments
2.3. Solution Chemistry Calculations
2.4. Zeta Potential Analysis
2.5. Contact Angle Measurements
2.6. FT-IR Analysis
3. Results and Discussions
3.1. Micro-Flotation Experiments
3.2. Solution Chemical Calculations and Analysis
3.3. Zeta Potential Analysis
3.4. Contact Angle Measurements
3.5. FTIR Analysis
3.6. Discussion
4. Conclusions
- (1)
- The results of micro-flotation experiments show that Al(III) ions in water have a strong inhibitory effect on magnetite, and the inhibitory effect on quartz is not very obvious.
- (2)
- The solution stoichiometry results show that the phases formed by Al(III) ions on the surface of magnetite and quartz are mainly Al(OH)3(s) and Al(OH)4−.
- (3)
- The results of zeta calculation and analysis show that the precipitation of Al(OH)3 produced by Al(III) ions will cover the surface of magnetite and hinder the direct interaction between minerals and collectors, resulting in a decrease in the floatability of magnetite. However, the subsequent adsorption of dodecylamine was hindered due to the precipitation of Al(III) ions and covering the active sites on the mineral surface.
- (4)
- The contact angle measurement results showed that Al(III) ions weakened the hydrophobicity of magnetite and quartz by reducing the contact angle of magnetite and quartz, and the floatability of magnetite and quartz after treatment decreased. Therefore, with the addition of Al(III) ions, the floatability of magnetite is lower than that of quartz.
- (5)
- The results of FTIR analysis showed that the addition of Al(III) ions could hinder the adsorption of dodecylamine on the magnetite surface. Meanwhile, the addition of Al(III) ions has no obvious effect on the adsorption of dodecylamine on the quartz surface.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Wang, D.; Tang, M.; Wu, Y.; Niu, X. Effects of Al(III) Ions at Magnetite Flotation from Quartz by Dodecylamine Al(III). Minerals 2022, 12, 613. https://doi.org/10.3390/min12050613
Wang D, Tang M, Wu Y, Niu X. Effects of Al(III) Ions at Magnetite Flotation from Quartz by Dodecylamine Al(III). Minerals. 2022; 12(5):613. https://doi.org/10.3390/min12050613
Chicago/Turabian StyleWang, Dong, Min Tang, Yan Wu, and Xiaoying Niu. 2022. "Effects of Al(III) Ions at Magnetite Flotation from Quartz by Dodecylamine Al(III)" Minerals 12, no. 5: 613. https://doi.org/10.3390/min12050613