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Title: マイクロX線CTを用いたコークス組織の三次元解析
Other Titles: 3D Analysis of Coke Microstructure Using μ-X-ray CT
Authors: 山本, 雄一郎1 Browse this author
柏谷, 悦章2 Browse this author →KAKEN DB
西村, 勝3 Browse this author
窪田, 征弘4 Browse this author
Authors(alt): Yamamoto, Yuichiro1
Kashiwaya, Yoshiaki2
Nishimura, Masaru3
Kubota, Masahiro4
Keywords: coke gasification
μ-X-ray CT
nondestructive analysis
Issue Date: 1-Feb-2009
Publisher: 日本鉄鋼協会
Journal Title: 鉄と鋼
Volume: 95
Issue: 2
Start Page: 103
End Page: 111
Publisher DOI: 10.2355/tetsutohagane.95.103
Abstract: The performance of coke in blast furnace (BF) used to prefer a high strength and low reactivity, generally. One of the reasons is in the importance of the gas and liquid permeability in BF, which are related to the stable operation of BF. On the other hand, the energy saving on the BF will contribute the decrease of CO2 emission, because the proportion of CO2 emission in the iron making field is quite large. To decrease the reducing agent ratio the reaction efficiency in the BF should increase more and more. It is recognized that the reactivity and the strength of coke contradict each other. The high reactivity coke generally has a low strength. To overcome the contradiction, we are going to use the catalytic effect on the coke gasification. Therefore, it is important to clarify the mechanism of coke gasification concerning to the coke microstructure and porosity. In this study, the coke gasification were analyzed using μ-X-ray CT. The optimum conditions for the image processing of the data from the μ-X-ray CT were obtained through the comparison with the cross section of the coke embedded in the resin. Nondestructive observation became possible. It was found that the relatively larger structure (carbon and pore: ~0.5 mm) were almost the same between the μ-X-ray CT and the cross section of the sample embedded in resin, but smaller structure could not observed appropriately. The problems (ex.: existence of iron catalysts, difference of thickness for X-ray absorption, etc.) to get a proper image by μ-X-ray CT still remained.
Rights: 著作権は日本鉄鋼協会にある
Type: article
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)

Submitter: 柏谷 悦章

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