The Effect of Conditioning on the Flotation of Pyrrhotite in the Presence of Chlorite
Abstract
:1. Introduction
2. Materials and Methods
2.1. Samples and Reagents
2.2. Experiments
2.2.1. Flotation Tests
2.2.2. Sedimentation Tests
2.2.3. XPS Analysis
3. Results and Discussion
4. Conclusions
- In pyrrhotite flotation, chlorite slimes impair pyrrhotite flotation performance due to the surface coating.
- Conditioning can effectively detach chlorite slimes from pyrrhotite surfaces, resulting in enhanced flotation recovery of pyrrhotite. When mixed minerals were conditioned under the natural atmosphere, a faster conditioning speed and longer conditioning time decreased pyrrhotite flotation recovery to some degree. However, when mixed minerals were conditioned under a nitrogen atmosphere, a faster conditioning speed and longer conditioning time gave better flotation results.
- XPS analysis shows that when mixed minerals were conditioned under the natural atmosphere, a faster conditioning speed and longer conditioning time accelerates the pyrrhotite surface oxidization, which results in a decrease in pyrrhotite flotation recovery.
- The industrial tests of nickel sulfide ores under nitrogen atmosphere have not been performed, which will be the focus of the following study.
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Composition | MgO | SiO2 | Al2O3 | CaO | TFe | Other |
---|---|---|---|---|---|---|
Percentage/% | 25.41 | 34.37 | 15.76 | 0.78 | 3.72 | 19.96 |
Peak | Fe Species | Without Conditioning | Conditioning under Natural Atmosphere for 20 min | Conditioning under Nitrogen Atmosphere for 20 min | |||
---|---|---|---|---|---|---|---|
Binding Energy (eV) | Relative Contents (%) | Binding Energy (eV) | Relative Contents (%) | Binding Energy (eV) | Relative Contents (%) | ||
A | Fe2(Sx)3 | 712.40 | 45.83 | 712.30 | 19.09 | 712.48 | 47.05 |
B | FeOOH | 711.45 | 21.95 | 711.41 | 31.20 | 711.62 | 18.37 |
C | Fe2O3 | 710.72 | 15.78 | 710.42 | 24.43 | 710.78 | 18.62 |
D | FeS | 710.07 | 16.44 | – | – | 710.07 | 15.96 |
E | Fe2(SO4)3 | – | – | 713.15 | 25.28 | – | – |
Peak | S Species | Without Conditioning | Conditioning under Natural Atmosphere for 20min | Conditioning under Nitrogen Atmosphere for 20min | |||
---|---|---|---|---|---|---|---|
Binding Energy (eV) | Relative Contents (%) | Binding Energy (eV) | Relative Contents (%) | Binding Energy (eV) | Relative Contents (%) | ||
A | FeS | 161.29 | 33.80 | 161.24 | 27.15 | 161.35 | 33.30 |
B | Fe2(Sx)3 | 162.42 | 33.44 | 162.41 | 33.49 | 162.47 | 33.92 |
C | S0 | 163.65 | 32.76 | 163.96 | 20.98 | 163.62 | 32.78 |
D | Fe2(SO4)3 | – | – | 168.36 | 15.38 | – | – |
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Chen, Y.; Shi, Q.; Feng, Q.; Lu, Y.; Zhang, W. The Effect of Conditioning on the Flotation of Pyrrhotite in the Presence of Chlorite. Minerals 2017, 7, 125. https://doi.org/10.3390/min7070125
Chen Y, Shi Q, Feng Q, Lu Y, Zhang W. The Effect of Conditioning on the Flotation of Pyrrhotite in the Presence of Chlorite. Minerals. 2017; 7(7):125. https://doi.org/10.3390/min7070125
Chicago/Turabian StyleChen, Yanfei, Qing Shi, Qiming Feng, Yiping Lu, and Wencai Zhang. 2017. "The Effect of Conditioning on the Flotation of Pyrrhotite in the Presence of Chlorite" Minerals 7, no. 7: 125. https://doi.org/10.3390/min7070125