Effect of different modification methods on fluidized bed hydrogen reduction of cohesive iron ore fines
文献类型：期刊论文
| 作者 | Du, Zhan2; Ge, Yu2; Liu, Fan1; Fan, Chuanlin2; Pan, Feng2 |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 400页码:7 |
| 关键词 | Hydrogen ironmaking Fluidized bed direct reduction Granulation modification Structure reorganization Cohesive iron ore fines |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2022.117226 |
| 英文摘要 | To develop breakthrough technologies that enable a drastic reduction in CO2 emissions from the ironmaking industry, the direct reduction of iron ore fines by H2-N2 in a fluidized bed with different modification methods was investigated. The results show that powder coating could prevent the defluidization of cohesive iron ore fines through the physical spacer effect, while granulation modification with cheap cement as the binder not only inhibits the occurrence of sticking, but also greatly accelerates the reduction rate. Microstructure observations indicate that granulation modification has reconstructed the irregularly shaped iron ore fines to be spherical, consisting of small grains, and created porous channels for gas diffusion, thereby increasing the reduction rate. In addition, structure reorganization constructs nonsticking barriers on the surface using native gangue and cement, and the occurrence of defluidization is avoided. Moreover, granulation modification has been demonstrated to be an effective and general solution for efficient and stable fluidized bed reduction of iron ore fines. This makes hydrogen ironmaking through fluidized bed direct reduction technically attractive. (c) 2022 Elsevier B.V. All rights reserved. |
| WOS关键词 | COATING MGO ; SELF-AGGLOMERATION ; PHASE-CHANGE ; STICKING ; FE2O3 ; CONCENTRATE ; MECHANISM ; KINETICS ; OXIDE ; DEFLUIDIZATION |
| 资助项目 | Na-tional Natural Science Foundation of China[21908227] ; Na-tional Natural Science Foundation of China[21878305] ; Na-tional Natural Science Foundation of China[22078326] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000790574800002 |
| 出版者 | ELSEVIER |
| 资助机构 | Na-tional Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53136]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Du, Zhan |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Zhan,Ge, Yu,Liu, Fan,et al. Effect of different modification methods on fluidized bed hydrogen reduction of cohesive iron ore fines[J]. POWDER TECHNOLOGY,2022,400:7. |
| APA | Du, Zhan,Ge, Yu,Liu, Fan,Fan, Chuanlin,&Pan, Feng.(2022).Effect of different modification methods on fluidized bed hydrogen reduction of cohesive iron ore fines.POWDER TECHNOLOGY,400,7. |
| MLA | Du, Zhan,et al."Effect of different modification methods on fluidized bed hydrogen reduction of cohesive iron ore fines".POWDER TECHNOLOGY 400(2022):7. |
入库方式： OAI收割
来源：过程工程研究所
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