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Direct reduction of fine iron ore concentrate in a conical fluidized bed
He, Shengyi1,2; Sun, Haoyan1; Hu, Chaoquan1; Li, Jun1; Zhu, Qingshan1,2; Li, Hongzhong1
2017-05-15
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号313页码:161-168
摘要The direct utilization of fine iron ore concentrate in fluidized beds is of significance but has the problem of defluidization during operation. In this study, we have made a comparison of a conical fluidized bed and a cylindrical fluidized bed for the direct reduction process. The results showed that the conical fluidized bed was more versatile than the cylindrical fluidized bed in treating the fine iron ore concentrate. In the conical fluidized bed, with a high superficial gas velocity, defluidization was successfully inhibited without adding inert materials or causing elutriation issues. Simultaneously, the reduction efficiency was considerably improved and the obtained iron agglomerates exhibited a high metallization degree. This work also proposes a fluidization regime diagram for the conical fluidized bed at the temperature range from 650 to 800 degrees C According to the fluidization regime diagram, the conical fluidized bed is able to considerably expand the operational temperature range for the direct reduction process. These results demonstrate that the conical fluidized bed is a clean, efficient alternative means for intensifying the direct reduction process. (C) 2017 Elsevier B.V. All rights reserved.
关键词Conical Fluidized Bed Cylindrical Fluidized Bed Direct Reduction Defluidization Agglomeration High Temperature
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2017.03.007
收录类别SCI
语种英语
关键词[WOS]HYDRODYNAMIC CHARACTERISTICS ; REACTOR ; GAS ; TEMPERATURE ; PYROLYSIS ; STICKING ; POWDERS ; CARBON ; FE2O3 ; PREVENTION
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Outstanding Youth Science Fund Project of NSFC(21325628) ; NSFC(51404228)
WOS记录号WOS:000399508100018
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22475
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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He, Shengyi,Sun, Haoyan,Hu, Chaoquan,et al. Direct reduction of fine iron ore concentrate in a conical fluidized bed[J]. POWDER TECHNOLOGY,2017,313:161-168.
APA He, Shengyi,Sun, Haoyan,Hu, Chaoquan,Li, Jun,Zhu, Qingshan,&Li, Hongzhong.(2017).Direct reduction of fine iron ore concentrate in a conical fluidized bed.POWDER TECHNOLOGY,313,161-168.
MLA He, Shengyi,et al."Direct reduction of fine iron ore concentrate in a conical fluidized bed".POWDER TECHNOLOGY 313(2017):161-168.
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