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Study on the formation of direct reduced iron by using biomass as reductants of carbon containing pellets in RHF process
Yuan, Peng1; Shen, Boxiong1; Duan, Dongping2; Adwek, George1; Mei, Xue1; Lu, Fengju1
2017-12-15
发表期刊ENERGY
ISSN0360-5442
卷号141页码:472-482
摘要

To investigate the possibility of using biomass reductants instead of fossil fuels in the formation of direct reduced iron (DRI) in rotary hearth furnace (RHF), three kinds of cheap biomass such as bamboo char, straw fiber and charcoal were selected as reductants to compare with anthracite and graphite. The effect of reductants, temperature, dwelling time, C/O ratio and particle sizes on the shrinkage, strength and metallization of the biomass/ore pellets was investigated and discussed. The optimized reduction conditions were obtained as 1200 degrees C, 20min, C/O = 0.7 and the particle size range of <0.15 mm, 1-2 mm and 015-0.3 mm for straw fiber, bamboo char and charcoal respectively. The results showed that straw fiber was considered as an optimal reductant in the formation of direct reduced iron instead of fossil fuels. By the techniques of scanning electron microscope (SEM), thermogravimetric analysis (TGA), and X-ray diffraction (XRD), the mechanism of biomass as reductants was revealed. Volatile matter was confirmed to play an important role in the formation of DRI when biomass used as reductants. (C) 2017 Elsevier Ltd. All rights reserved.

关键词Biomass Reductants Direct Reduced Iron Shrinkage Strength Metallization
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.energy.2017.09.058
收录类别SCI
语种英语
关键词[WOS]Residual Volatile Matter ; Steel-industry ; Ore Reduction ; Ironmaking Process ; Composite Pellets ; Co2 Emissions ; Coal-char ; Part i ; Steelmaking ; Kinetics
WOS研究方向Thermodynamics ; Energy & Fuels
WOS类目Thermodynamics ; Energy & Fuels
项目资助者Natural Science Foundation of Hebei Province(E2016202361) ; National Key Research and Development Plan(2016YFCO209202) ; Research Fund of International Young Scientists(51550110237) ; Science and technology project from Hebei Province(16273709D)
WOS记录号WOS:000426335600041
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24055
专题研究所(批量导入)
作者单位1.Hebei Univ Technol, Sch Energy & Environm Engn, Tianjin 300401, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
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Yuan, Peng,Shen, Boxiong,Duan, Dongping,et al. Study on the formation of direct reduced iron by using biomass as reductants of carbon containing pellets in RHF process[J]. ENERGY,2017,141:472-482.
APA Yuan, Peng,Shen, Boxiong,Duan, Dongping,Adwek, George,Mei, Xue,&Lu, Fengju.(2017).Study on the formation of direct reduced iron by using biomass as reductants of carbon containing pellets in RHF process.ENERGY,141,472-482.
MLA Yuan, Peng,et al."Study on the formation of direct reduced iron by using biomass as reductants of carbon containing pellets in RHF process".ENERGY 141(2017):472-482.
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