Vertical Section Observation of the Solid Flow in a Blast Furnace with a Cutting Method
Abstract
:1. Introduction
2. Materials and Methods
2.1. Experimental Design
2.2. Experiment Setup
2.3. Particle Properties
2.4. Experimental Procedure
2.5. Discrete Element Method
3. Results
3.1. Vertical Section of the Solid Flow in the Experimental BF Model
3.2. Vertical Section of Solid Flow Under Different Burden Layer Conditions
3.3. The Boundary of the Plug Flow and Convergence Flow in BF
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
Appendix A
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Parameters | Value |
---|---|
Diameter of hearth, m | 0.213 |
Diameter of belly, m | 0.267 |
Diameter of throat, m | 0.200 |
Height of hearth, m | 0.213 |
Height of bosh, m | 0.160 |
Height of belly, m | 0.054 |
Height of shaft, m | 0.333 |
Height of throat, m | 0.100 |
Forces and Torques | Symbols | Equations |
---|---|---|
Normal contact force | ||
Normal damping force | ||
Tangential contact force | ||
Tangential damping force | ||
Coulomb friction force | ||
Torque by tangential forces | ||
Rolling friction torque |
Parameters | Sector Model 1 | Sector Model 2 |
---|---|---|
Particle shape | Spherical | Spherical |
Particle motion state | Moving bed | Moving bed |
Particle diameter, mm | 2.5 (c), 1.25 (o) | 2.5 (polyethylene) |
Particle density, kg/m3 | 1100 (c), 4000 (o) | 910 (polyethylene) |
Wall density, kg/m3 | 7600 (furnace wall) | 1200 (acrylic) |
Time step, s | 1 × 10−4 | 1 × 10−4 |
Total number | Variable | 35,000 |
Poisson’s ratio | 0.21 (c), 0.24 (o) | 0.49 (polyethylene) |
Shear modulus, Pa | 1e + 07 | 1e + 07 |
Coefficient of restitution | 0.3 | 0.3 |
Coefficient of interparticle static friction | 0.63 (c-c), 0.4 (c-o), 0.32 (o-o) | 0.21 |
Coefficient of interparticle rolling friction | 0.05 | 0.05 |
Coefficient of static friction (p - wall A) | 0 | 0 |
Coefficient of static friction (p - wall B) | 0 | 0 |
Coefficient of static friction (p - wall C) | 0 | 0.156 |
Coefficient of static friction (p - wall D) | 0.56 (c-w), 0.31 (o-w) | 0.156 |
Coefficient of rolling friction (p - w) | 0.05 | 0.05 |
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Lu, Y.; Jiang, Z.; Zhang, X.; Wang, J.; Zhang, X. Vertical Section Observation of the Solid Flow in a Blast Furnace with a Cutting Method. Metals 2019, 9, 127. https://doi.org/10.3390/met9020127
Lu Y, Jiang Z, Zhang X, Wang J, Zhang X. Vertical Section Observation of the Solid Flow in a Blast Furnace with a Cutting Method. Metals. 2019; 9(2):127. https://doi.org/10.3390/met9020127
Chicago/Turabian StyleLu, Yuanxiang, Zeyi Jiang, Xinru Zhang, Jingsong Wang, and Xinxin Zhang. 2019. "Vertical Section Observation of the Solid Flow in a Blast Furnace with a Cutting Method" Metals 9, no. 2: 127. https://doi.org/10.3390/met9020127