Direct reduction of mixed biomass-Fe₂O₃ briquettes using biomass-generated syngas

This paper presents a novel ironmaking technology using biomass and iron oxide. The biomass instead of coke was mixed together with iron ore powder, water, limestone and bentonite for the production of Fe₂O₃ briquettes. The sintering process and direct reduction of briquettes were simultaneously con...

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Bibliographic Details
Published in:Renewable energy 2011-12, Vol.36 (12), p.3332-3336
Main Authors: Luo, Siyi, Yi, Cuijie, Zhou, Yangmin
Format: Article
Language:English
Subjects:
Applied sciences
bentonite
biomass
briquettes
Energy
Exact sciences and technology
ferric oxide
hydrogen
iron
iron oxides
limestone
renewable energy sources
synthesis gas
temperature
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Summary:This paper presents a novel ironmaking technology using biomass and iron oxide. The biomass instead of coke was mixed together with iron ore powder, water, limestone and bentonite for the production of Fe₂O₃ briquettes. The sintering process and direct reduction of briquettes were simultaneously conducted in the same reactor. Briquettes with different composition were isothermally reduced directly to metallic iron with H₂–CO mixtures at different temperatures (ranging from 900 to 1100 °C) and reaction time (30–60 min) to investigate the effects of briquettes composition, reduction temperature, reaction time and reducing gas composition on the quality of metallic iron. The results show that the increase of reduction temperature, reaction time and H₂ content of the reducing gas are favorable for the quality of pig iron, within the experimental conditions. At a reduction temperature of 1100 °C and reaction time of 60 min, the Fe content in product achieves the maximum 94.7%.
ISSN:0960-1481
1879-0682
DOI:10.1016/j.renene.2011.05.006