Flotation Separation of Chalcopyrite and Talc Using Calcium Ions and Calcium Lignosulfonate as a Combined Depressant
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Flotation Experiment
- α—The primary ore grade, %.
- β—The concentrate grade, %.
- γ—The concentrate yield, %.
- ε—Recovery, %.
- βmax—Pure mineral grade, %.
2.3. Adsorption Capacity Experiment
- Γ—Adsorption density of calcium lignosulfonate on the mineral surface, mg/m2.
- Co—Original concentration of CLS, mg/L.
- Ce—Supernatant concentration of calcium lignosulfonate, mg/L.
- V—Volume of solution, ml.
- m—Quality of minerals, g.
- A—Specific surface area of minerals, m2/g.
2.4. Zeta Potential Measurements
2.5. Fourier Transform Infrared Spectrometry (FTIR) Analysis
2.6. AFM Imaging
3. Results and Discussion
3.1. Flotation Test Results
3.2. Adsorption Capacity Experimental Results
3.3. Zeta Potential Measurements
3.4. FTIR Measurements
3.5. AFM Imaging Results
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | Mass Fraction/% | |||||
---|---|---|---|---|---|---|
Cu | TFe | S | MgO | SiO2 | Al2O3 | |
Chalcopyrite | 33.635 | 29.764 | 33.584 | - | 2.782 | - |
Talc | - | 0.774 | - | 29.561 | 64.830 | 0.366 |
Conditions | Product | Yield/% | Grade/% | Recovery/% | Separation Efficiency/% | ||
---|---|---|---|---|---|---|---|
Cu | MgO | Cu | MgO | ||||
- | Concentrate | 81.5 | 15.3 | 17.8 | 88.7 | 79.2 | 2.3 |
Tailings | 18.5 | 8.6 | 20.5 | 11.3 | 20.8 | ||
Feed | 100.0 | 14.0 | 18.3 | 100.0 | 100.0 | ||
CLS | Concentrate | 27.9 | 23.8 | 6.8 | 46.2 | 11.0 | 11.7 |
Tailings | 72.1 | 10.8 | 21.1 | 53.8 | 89.0 | ||
Feed | 100.0 | 14.4 | 17.1 | 100.0 | 100.0 | ||
Ca2+ + CLS | Concentrate | 23.4 | 29.7 | 3.0 | 50.0 | 4.1 | 26.3 |
Tailings | 76.6 | 9.0 | 21.7 | 50.0 | 95.9 | ||
Feed | 100.0 | 13.9 | 17.3 | 100.0 | 100.0 |
Samples | RMS (nm) ± 0.005 | PTV (nm) ± 0.005 | ΔPTV (nm) ± 0.005 | Coverage (%) |
---|---|---|---|---|
Bare talc | 0.275 | 0.176 | - | - |
Talc + CLS | 1.17 | 1.007 | 0.831 | 76.75 |
Talc + Ca2++ CLS | 1.27 | 1.091 | 0.915 | 91.46 |
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Mai, Q.; Zhou, H.; Ou, L. Flotation Separation of Chalcopyrite and Talc Using Calcium Ions and Calcium Lignosulfonate as a Combined Depressant. Metals 2021, 11, 651. https://doi.org/10.3390/met11040651
Mai Q, Zhou H, Ou L. Flotation Separation of Chalcopyrite and Talc Using Calcium Ions and Calcium Lignosulfonate as a Combined Depressant. Metals. 2021; 11(4):651. https://doi.org/10.3390/met11040651
Chicago/Turabian StyleMai, Qiongyin, Hanyu Zhou, and Leming Ou. 2021. "Flotation Separation of Chalcopyrite and Talc Using Calcium Ions and Calcium Lignosulfonate as a Combined Depressant" Metals 11, no. 4: 651. https://doi.org/10.3390/met11040651