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Quantitative Estimation of Coupling Phenomenon between Reduction and Gasification on the Facing Pair of Iron Oxide and Graphite
| Title: | Quantitative Estimation of Coupling Phenomenon between Reduction and Gasification on the Facing Pair of Iron Oxide and Graphite |
| Authors: | Kashiwaya, Yoshiaki Browse this author →KAKEN DB | | Kanbe, Motomichi Browse this author | | Ishii, Kuniyoshi Browse this author |
| Keywords: | coupling reaction | | coupling phenomenon | | iron ore reduction | | gasification | | mechanism of reduction and gasification |
| Issue Date: | Nov-2006 |
| Publisher: | Iron and Steel Institute of Japan |
| Journal Title: | ISIJ International |
| Volume: | 46 |
| Issue: | 11 |
| Start Page: | 1610 |
| End Page: | 1617 |
| Publisher DOI: | 10.2355/isijinternational.46.1610 |
| Abstract: | In previous study, the analysis of simultaneous reaction between the reduction reaction and the gasification reaction in a facing pair was performed. The definition of the coupling phenomenon was proposed. It was found that the starting temperature of gasification decreased from 900 to 600°C in the facing pair under CO2 atmosphere.
In present study, the quantitative estimation of coupling phenomenon between reduction and gasification was carried out with modified experimental setup, in which all reaction gas (Ar–30%CO2) could be passed through the space of facing pair of iron oxide (hematite) and graphite. Reduction reaction was promoted by the gasification reaction occurring in the opposite surface and the extent of reduction reaction was obtained as a function of the distance.
In the shortest distance, 0.5 mm, the CO2 flow rate increased in the outlet gas, which meant that the reduction reaction was promoted and CO2 gas reproduced during experiment.
The ratio of RDR (reduction rate) to RCS (gasification rate) increased until 0.5 mm from 1.5 mm, which was the distance of facing pair of hematite and graphite. |
| Rights: | 著作権は日本鉄鋼協会にある |
| Type: | article |
| URI: | http://hdl.handle.net/2115/75692 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 柏谷 悦章
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