Modelling of the Fine-Grained Materials Briquetting Process in a Roller Press with the Discrete Element Method
Abstract
:1. Introduction
2. Materials and Methods
- Calcium hydroxide—mixture of calcium hydroxide 85.1% (slaked lime) and water 14.9% with a moisture content of 15.0%;
- Copper ore concentrate mixture—copper ore concentrate with 5% sulphite lye (dry mass) and a moisture content of 4.2%.
2.1. Briquetting Material Model
2.2. Model of Material Briquetting in a Roller Press
3. Research Results and Analysis
3.1. The Simulation Results
3.2. Comparison of Simulation Test Results with Experimental Data
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Compaction Coefficient | Stress, MPa | Young’s Modulus, GPa | Cohesion Energy Density, J/m3 | |
---|---|---|---|---|
Calcium hydroxide | 3.35 | 120.0 | 1.70 | 6.2 × 107 |
Copper ore concentrate mixture | 1.85 | 127.0 | 4.65 | 2.1 × 108 |
Rollers Peripheral Speed, m/s | Stress Max, MPa | Stress Min, MPa | Average Stresses, MPa | Average Stresses, MPa | |
---|---|---|---|---|---|
0.10 | cavity | 51.03 | 5.47 | 27.84 | 28.42 |
groove | 39.37 | 12.58 | 29.00 | ||
0.15 | cavity | 41.18 | 7.98 | 28.06 | 27.97 |
groove | 41.09 | 11.05 | 27.88 | ||
0.20 | cavity | 46.46 | 7.77 | 27.71 | 27.39 |
groove | 37.90 | 11.54 | 27.06 | ||
0.30 | cavity | 40.82 | 7.42 | 26.13 | 25.95 |
groove | 36.95 | 11.65 | 25.78 |
Rollers Peripheral Speed, m/s | Stress Max, MPa | Stress Min, MPa | Average Stresses, MPa | Average Stresses, MPa | |
---|---|---|---|---|---|
0.10 | cavity | 64.63 | 12.33 | 38.65 | 39.34 |
groove | 59.66 | 17.01 | 40.04 | ||
0.15 | cavity | 70.64 | 11.19 | 42.16 | 40.95 |
groove | 66.97 | 16.74 | 39.74 | ||
0.20 | cavity | 63.53 | 10.86 | 37.78 | 36.52 |
groove | 58.55 | 14.39 | 35.26 | ||
0.30 | cavity | 70.83 | 11.34 | 41.69 | 40.96 |
groove | 62.16 | 15.21 | 39.70 |
Peripheral speed of the rollers, m/s | 0.10 | 0.15 | 0.20 | 0.30 |
Average density of briquettes from calcium hydroxide, g/cm3 | 1.56 | 1.60 | 1.61 | 1.60 |
Average density of briquettes from mixture based on copper ore concentrate, g/cm3 | 2.457 | 2.416 | 2.425 | 2.434 |
Peripheral speed of the rollers, m/s | 0.10 | 0.15 |
Average density of briquettes from calcium hydroxide, g/cm3 simulation | 1.56 | 1.60 |
Average density of briquettes from calcium hydroxide, g/cm3 experiment | 1.71 ± 0.02 | - |
Average density of briquettes from mixture based on copper ore concentrate, g/cm3-simulation | 2.46 | 2.42 |
Average density of briquettes from mixture based on copper ore concentrate, g/cm3-experiment | - | 2.58 ± 0.08 |
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Bembenek, M.; Buczak, M.; Baiul, K. Modelling of the Fine-Grained Materials Briquetting Process in a Roller Press with the Discrete Element Method. Materials 2022, 15, 4901. https://doi.org/10.3390/ma15144901
Bembenek M, Buczak M, Baiul K. Modelling of the Fine-Grained Materials Briquetting Process in a Roller Press with the Discrete Element Method. Materials. 2022; 15(14):4901. https://doi.org/10.3390/ma15144901
Chicago/Turabian StyleBembenek, Michał, Magdalena Buczak, and Kostiantyn Baiul. 2022. "Modelling of the Fine-Grained Materials Briquetting Process in a Roller Press with the Discrete Element Method" Materials 15, no. 14: 4901. https://doi.org/10.3390/ma15144901