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Enhanced effect and mechanism of Fe2O3 on CaO for defluidization inhibition during fluidized bed reduction of iron ore fines
Du, Zhan1,2; Zhu, Qingshan1; Fan, Chuanlin1; Pan, Feng1; Xie, Zhaohui1
2017-05-15
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号313页码:82-87
摘要Brazilian iron ore fines were reduced in a laboratory fluidized bed with different Ca-based additives at 800 degrees C using 0.5 L/min H-2-0.5 L/min N-2. The fluidization results show that pure CaO and Ca(NO3)(2)center dot 4H(2)O only slightly prolong the fluidization time, with defluidization occurring eventually. However, mixtures of Ca(NO3)(2)center dot 4H(2)O and Fe(NO3)(3)center dot 9H(2)O could effectively inhibit defluidization. Reduction results of CaO/Fe2O3 suggest that Ca-based additives mainly inhibit defluidization through the physical spacer effect Microstructure observations indicate that 2CaO center dot Fe2O3 could suppress the growth of sharp-pointed whisker, and the introduction of Fe2O3 allows the Ca species to adhere tightly to the surface of the sticky iron, thereby decreasing its adhesiveness. Moreover, Fe2O3 is demonstrated to be a general binder capable of enhancing the ability of ineffective additives to prevent defluidization. (C) 2017 Elsevier B.V. All rights reserved.
关键词Defluidization Enhancement Fluidized Bed Reduction Fe2o3 Cao
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2017.03.010
收录类别SCI
语种英语
关键词[WOS]COATING MGO ; STICKING ; OXIDE ; PARTICLES ; CO
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者China National Funds for Distinguished Young Scientists(21325628) ; National Basic Research Program of China(2013C6632603) ; National Natural Science Foundation of China(51504232)
WOS记录号WOS:000399508100010
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22479
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Du, Zhan,Zhu, Qingshan,Fan, Chuanlin,et al. Enhanced effect and mechanism of Fe2O3 on CaO for defluidization inhibition during fluidized bed reduction of iron ore fines[J]. POWDER TECHNOLOGY,2017,313:82-87.
APA Du, Zhan,Zhu, Qingshan,Fan, Chuanlin,Pan, Feng,&Xie, Zhaohui.(2017).Enhanced effect and mechanism of Fe2O3 on CaO for defluidization inhibition during fluidized bed reduction of iron ore fines.POWDER TECHNOLOGY,313,82-87.
MLA Du, Zhan,et al."Enhanced effect and mechanism of Fe2O3 on CaO for defluidization inhibition during fluidized bed reduction of iron ore fines".POWDER TECHNOLOGY 313(2017):82-87.
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