Influence of Reduction Condition on the Morphology of Newly Formed Metallic Iron During the Fluidized Bed Reduction of Fine Iron Ores and its Corresponding Agglomeration Behavior | |
Du, Zhan1,2; Zhu, Qingshan1; Fan, Chuanlin1; Pan, Feng1; Li, Hongzhong1; Xie, Zhaohui1 | |
刊名 | STEEL RESEARCH INTERNATIONAL |
2016-06-01 | |
卷号 | 87期号:6页码:789-797 |
关键词 | morphology of newly formed metallic iron agglomeration behavior fluidized bed reduction fine iron ores |
ISSN号 | 1611-3683 |
英文摘要 | The fine iron ores from Chile are reduced in a laboratory fluidized bed at 973-1173 K with CO-H-2-CO2 mixtures to investigate the influence of reduction condition on the morphology of newly formed metallic iron and its corresponding agglomeration behavior. The results reveal that the addition of H-2 in CO accelerates the moving rate of the Fe/Fe1-xO interface and increases the amount of the iron nucleus formed during the initial reduction period, which induce the transformation of iron morphology from fibrous to dense. The presence of CO2 in CO makes the fibrous iron shorter and sparser, especially when the content of CO2 is 30% (by volume), the iron appears as "cactus-like." The increase of reduction temperature makes the fibrous iron stronger and more active. The sticking index indicates that the long and strong iron whiskers are prone to form stable agglomerates even at a low metallization degree, but the dense iron trends to behave separate. Furthermore, based on the precipitation mechanism of iron proposed by the authors, it is manifested that the agglomeration behavior of the fine iron ores could be controlled by pre-reduction in H-2-rich reducing gas (H-2/(H-2 + CO) >= 30%, by volume). |
WOS标题词 | Science & Technology ; Technology |
类目[WOS] | Metallurgy & Metallurgical Engineering |
研究领域[WOS] | Metallurgy & Metallurgical Engineering |
关键词[WOS] | WHISKER FORMATION ; OXIDE COMPACT ; STICKING BEHAVIOR ; GASEOUS REDUCTION ; REDUCING GAS ; GROWTH ; MECHANISM ; PELLETS ; FE2O3 ; MGO |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000385341300012 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/21571] |
专题 | 过程工程研究所_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 |
推荐引用方式 GB/T 7714 | Du, Zhan,Zhu, Qingshan,Fan, Chuanlin,et al. Influence of Reduction Condition on the Morphology of Newly Formed Metallic Iron During the Fluidized Bed Reduction of Fine Iron Ores and its Corresponding Agglomeration Behavior[J]. STEEL RESEARCH INTERNATIONAL,2016,87(6):789-797. |
APA | Du, Zhan,Zhu, Qingshan,Fan, Chuanlin,Pan, Feng,Li, Hongzhong,&Xie, Zhaohui.(2016).Influence of Reduction Condition on the Morphology of Newly Formed Metallic Iron During the Fluidized Bed Reduction of Fine Iron Ores and its Corresponding Agglomeration Behavior.STEEL RESEARCH INTERNATIONAL,87(6),789-797. |
MLA | Du, Zhan,et al."Influence of Reduction Condition on the Morphology of Newly Formed Metallic Iron During the Fluidized Bed Reduction of Fine Iron Ores and its Corresponding Agglomeration Behavior".STEEL RESEARCH INTERNATIONAL 87.6(2016):789-797. |
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