High Gradient Magnetic Separation of Pure Gd2O3 Particles from Pure La2O3 Particles
Abstract
:1. Introduction
2. Experiment
2.1. Materials and Their Characteristics
2.2. Methods
2.3. Theoretical Basis
2.3.1. Magnetic Force
2.3.2. Fluid Drag Force
2.3.3. Gravitational Force
2.3.4. Surface Force
3. Results and Discussion
3.1. Ethanol as a Fluid Medium
3.2. Different Dispersants
3.2.1. Magnetic Separation Results, Zeta Potential, and Infrared Analysis
3.2.2. DLVO Theory Analysis
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Dispersant | Product * | Weight (g) | Grade (%) | Recovery (%) | ||
---|---|---|---|---|---|---|
La2O3 | Gd2O3 | La2O3 | Gd2O3 | |||
SHMP | M | 0.437 | 4.53 | 95.47 | 3.78 | 91.31 |
NM | 0.615 | 92.71 | 7.29 | 96.22 | 8.69 | |
Na2SiO3 | M | 0.8245 | 3.65 | 96.35 | 4.18 | 99.08 |
NM | 0.8247 | 98.94 | 1.06 | 95.82 | 0.92 | |
CA | M | 1.1 | 19.83 | 80.17 | 27.96 | 97.48 |
NM | 0.603 | 96.11 | 3.89 | 72.04 | 2.52 | |
Na2CO3 | M | 0.8345 | 5.43 | 94.57 | 5.63 | 94.39 |
NM | 1.01 | 94.19 | 5.81 | 94.37 | 5.61 |
pH and Particle Size | SHMP | Na2SiO3 | CA | Na2CO3 | Water |
---|---|---|---|---|---|
Initial pH | 6.62 | 11.25 | 3.4 | 10.68 | 6.7 |
pH after adding the oxide particle mixture | 10.94 | 11.25 | 6.75 | 10.59 | 7.11 |
Size of particle mixture at pH = 11 (μm) | 1.21 | 2.51 | 1.91 | 2.37 | 3.33 |
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Chen, L.; Wu, Y.; Nhung, N.T.H.; He, C.; Chen, H.; Dodbiba, G.; Otsuki, A.; Fujita, T. High Gradient Magnetic Separation of Pure Gd2O3 Particles from Pure La2O3 Particles. Metals 2023, 13, 241. https://doi.org/10.3390/met13020241
Chen L, Wu Y, Nhung NTH, He C, Chen H, Dodbiba G, Otsuki A, Fujita T. High Gradient Magnetic Separation of Pure Gd2O3 Particles from Pure La2O3 Particles. Metals. 2023; 13(2):241. https://doi.org/10.3390/met13020241
Chicago/Turabian StyleChen, Liu, Yongxiang Wu, Nguyen Thi Hong Nhung, Chunlin He, Hao Chen, Gjergj Dodbiba, Akira Otsuki, and Toyohisa Fujita. 2023. "High Gradient Magnetic Separation of Pure Gd2O3 Particles from Pure La2O3 Particles" Metals 13, no. 2: 241. https://doi.org/10.3390/met13020241