Effect of Sodium Pyrophosphate on the Reverse Flotation of Dolomite from Apatite
Abstract
:1. Introduction
2. Experiments
2.1. Materials
2.2. Micro-Flotation Experiments
2.3. Zeta Potential Measurements
2.4. Contact Angle Measurements
2.5. XPS Analysis
3. Results and Discussion
3.1. Micro-flotation Experiments
3.2. Zeta Potential Measurements
3.3. Contact Angle Measurements
3.4. XPS Analysis
3.5. Depression Mechanism of NaPP
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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NaPP (mg/L) | Production | Yield (%) | Grade (%) | Recovery (%) | ||
---|---|---|---|---|---|---|
P2O5 | MgO | P2O5 | MgO | |||
0 | Concentrate | 29.4 | 26.4 | 3.8 | 39.4 | 11.3 |
Tailing | 70.6 | 16.9 | 12.4 | 60.6 | 88.7 | |
Feed | 100.0 | 19.7 | 9.9 | 100.0 | 100.0 | |
100 | Concentrate | 55.7 | 34.1 | 2.9 | 96.5 | 16.3 |
Tailing | 44.3 | 1.5 | 18.6 | 3.5 | 83.7 | |
Feed | 100.0 | 19.7 | 9.9 | 100.0 | 100.0 |
Sample | Binding Energy (eV) | Chemical Shift (eV) | ||
---|---|---|---|---|
Ca | Mg | Ca | Mg | |
Apatite | 347.54 | - | - | - |
Apatite + NaOL | 347.03 | - | −0.51 | - |
Apatite + NaPP + NaOL | 347.49 | - | −0.05 | - |
Dolomite | 347.14 | 1303.79 | - | - |
Dolomite + NaOL | 346.51 | 1303.50 | −0.63 | −0.29 |
Dolomite + NaPP + NaOL | 347.07 | 1303.23 | −0.07 | −0.56 |
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Chen, Y.; Feng, Q.; Zhang, G.; Liu, D.; Liu, R. Effect of Sodium Pyrophosphate on the Reverse Flotation of Dolomite from Apatite. Minerals 2018, 8, 278. https://doi.org/10.3390/min8070278
Chen Y, Feng Q, Zhang G, Liu D, Liu R. Effect of Sodium Pyrophosphate on the Reverse Flotation of Dolomite from Apatite. Minerals. 2018; 8(7):278. https://doi.org/10.3390/min8070278
Chicago/Turabian StyleChen, Yanfei, Qiming Feng, Guofan Zhang, Dezhi Liu, and Runzhe Liu. 2018. "Effect of Sodium Pyrophosphate on the Reverse Flotation of Dolomite from Apatite" Minerals 8, no. 7: 278. https://doi.org/10.3390/min8070278