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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
Source PublicationENERGY
ISSN0360-5442
Volume141Pages:472-482
Abstract

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.

KeywordBiomass Reductants Direct Reduced Iron Shrinkage Strength Metallization
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.energy.2017.09.058
Indexed BySCI
Language英语
WOS KeywordResidual Volatile Matter ; Steel-industry ; Ore Reduction ; Ironmaking Process ; Composite Pellets ; Co2 Emissions ; Coal-char ; Part i ; Steelmaking ; Kinetics
WOS Research AreaThermodynamics ; Energy & Fuels
WOS SubjectThermodynamics ; Energy & Fuels
Funding OrganizationNatural 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 IDWOS:000426335600041
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24055
Collection研究所(批量导入)
Affiliation1.Hebei Univ Technol, Sch Energy & Environm Engn, Tianjin 300401, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
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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