Flotation Separation of Scheelite from Fluorite Using Sodium Polyacrylate as Inhibitor
Abstract
:1. Introduction
2. Experimental
2.1. Pure Minerals and Reagents
2.2. Micro–Flotation Tests
2.3. IR Study
2.4. Zeta Potential Measurements
2.5. XPS Analysis
2.6. Computational Details
3. Results and Discussion
3.1. Single-Mineral Flotation
3.2. IR Spectra Measurements
3.3. Zeta Potential Measurements
3.4. XPS Results
3.5. Adsorption Energy
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Samples | Atomic Concentration of Elements (Atomic %) | ||||
---|---|---|---|---|---|
Ca | W | F | C | O | |
Scheelite | 11.33 | 18.55 | - b | 26.96 | 43.16 |
Scheelite + PA-Na | 11.59 | 17.43 | - b | 27.33 | 43.65 |
Δ a | 0.26 | −1.12 | - b | 0.37 | 0.49 |
Fluorite | 25.37 | - b | 37.17 | 20.1 | 17.36 |
Fluorite + PA-Na | 25.58 | - b | 34.1 | 22.07 | 18.25 |
Δ a | 0.21 | - b | −3.07 | 1.97 | 0.89 |
Mineral | Mode of Adsorption | E(M+R) (eV) | EM (eV) | ER (eV) | Eads (eV) | Eads (KJ/mol) |
---|---|---|---|---|---|---|
Scheelite + PA-Na | WP1 | −42,915.93 | −37,510.89 | −5401.65 | −3.39 | −327.21 |
WP2 | −42,916.26 | −37,510.89 | −5401.65 | −3.76 | −359.27 | |
Scheelite + H2O | WH1 | −37,978.42 | −37,510.89 | −467.20 | −0.32 | −31.27 |
WH2 | −37,980.43 | −37,510.89 | −467.20 | −2.34 | −225.70 | |
WH3 | −37,979.35 | −37,510.89 | −467.20 | −2.26 | −121.50 |
Mineral | Mode of Adsorption | E(M+R) (eV) | EM (eV) | ER (eV) | Eads (eV) | Eads (KJ/mol) |
---|---|---|---|---|---|---|
Fluorite + PA-Na | FP1 | −14,714.07 | −9310.34 | −5399.82 | −3.91 | −376.62 |
FP2 | −14,714.37 | −9310.34 | −5399.82 | −4.20 | −405.32 | |
Fluorite + H2O | FH1 | −9777.70 | −9310.34 | −466.82 | −0.55 | −52.96 |
FH2 | −9777.31 | −9310.34 | −466.82 | −1.155 | −111.41 | |
FH3 | −9777.32 | −9310.34 | −466.82 | −1.162 | −112.03 |
Mode of Adsorption | Eb | Mode of Adsorption | Ea | Eads |
---|---|---|---|---|
Scheelite + H2O | −225.70 | Scheelite + PA-Na | −359.27 | −133.57 |
Fluorite + H2O | −112.03 | Fluorite + PA-Na | −405.32 | −293.29 |
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Zhang, Y.; Li, Y.; Chen, R.; Wang, Y.; Deng, J.; Luo, X. Flotation Separation of Scheelite from Fluorite Using Sodium Polyacrylate as Inhibitor. Minerals 2017, 7, 102. https://doi.org/10.3390/min7060102
Zhang Y, Li Y, Chen R, Wang Y, Deng J, Luo X. Flotation Separation of Scheelite from Fluorite Using Sodium Polyacrylate as Inhibitor. Minerals. 2017; 7(6):102. https://doi.org/10.3390/min7060102
Chicago/Turabian StyleZhang, Ying, Youyu Li, Rong Chen, Yuhua Wang, Jiushuai Deng, and Ximei Luo. 2017. "Flotation Separation of Scheelite from Fluorite Using Sodium Polyacrylate as Inhibitor" Minerals 7, no. 6: 102. https://doi.org/10.3390/min7060102