Application of the discrete approach to the simulation of size segregation in granular chute flow
文献类型：期刊论文
| 作者 | Zhang, JY; Hu, ZG; Wei, G; Zhang, YJ; Li, TH; Li, JH |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2004-09-01 |
| 卷号 | 43期号:18页码:5521-5528 |
| ISSN号 | 0888-5885 |
| 关键词 | particle simulation rolling friction fluidized-bed drum |
| 其他题名 | Ind. Eng. Chem. Res. |
| 中文摘要 | Size segregation is commonly observed in flows of particles with different physical and mechanical properties. It can be favorable or undesirable, depending on different industrial processes. In our case, the size segregation of ore particles in a chute flow is utilized to prepare a well-bedded feedstock for high sintering quality, and magnets are installed below the chute to enhance size segregation. Discrete element method (DEM) simulations are carried out to explore the optimal arrangement of the magnets. The system is reduced to two dimensions, and the irregular ore particles of continuous size distribution are represented by rough disks of four diameters, with their properties reasonably sampled from the sintering materials. The magnetic fields are calculated using Ansoft in advance, which excludes the influence of the ore layer itself because it is weakly magnetic only. The simulations show that the proper magnetic field can significantly enhance the segregation, and it seems that the component normal to the chute has the dominant effect on segregation but the tangential component is also critical. The simulation results are in good agreement with our experiences in the industrial systems designed with consultation to these results. We suggest that despite major simplifications, the DEM is still an effective tool for dynamic studies and the design of complex granular flows in mineral processing. |
| 英文摘要 | Size segregation is commonly observed in flows of particles with different physical and mechanical properties. It can be favorable or undesirable, depending on different industrial processes. In our case, the size segregation of ore particles in a chute flow is utilized to prepare a well-bedded feedstock for high sintering quality, and magnets are installed below the chute to enhance size segregation. Discrete element method (DEM) simulations are carried out to explore the optimal arrangement of the magnets. The system is reduced to two dimensions, and the irregular ore particles of continuous size distribution are represented by rough disks of four diameters, with their properties reasonably sampled from the sintering materials. The magnetic fields are calculated using Ansoft in advance, which excludes the influence of the ore layer itself because it is weakly magnetic only. The simulations show that the proper magnetic field can significantly enhance the segregation, and it seems that the component normal to the chute has the dominant effect on segregation but the tangential component is also critical. The simulation results are in good agreement with our experiences in the industrial systems designed with consultation to these results. We suggest that despite major simplifications, the DEM is still an effective tool for dynamic studies and the design of complex granular flows in mineral processing. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | PARTICLE SIMULATION ; ROLLING FRICTION ; FLUIDIZED-BED ; DRUM |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000223648400013 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4897]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Multi Phase React Lab, Beijing 100080, Peoples R China 2.Baoshan Iron & Steel Co Ltd, Ctr Technol, Shanghai 201900, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, JY,Hu, ZG,Wei, G,et al. Application of the discrete approach to the simulation of size segregation in granular chute flow[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2004,43(18):5521-5528. |
| APA | Zhang, JY,Hu, ZG,Wei, G,Zhang, YJ,Li, TH,&Li, JH.(2004).Application of the discrete approach to the simulation of size segregation in granular chute flow.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,43(18),5521-5528. |
| MLA | Zhang, JY,et al."Application of the discrete approach to the simulation of size segregation in granular chute flow".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 43.18(2004):5521-5528. |
入库方式： OAI收割
来源：过程工程研究所
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