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コークスの開気孔・閉気孔の割合とミクロ気孔の存在場所

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Title: コークスの開気孔・閉気孔の割合とミクロ気孔の存在場所
Other Titles: Location of Micro-pore and the Ratio of Open/Closed Pore in the Cokes
Authors: 柏谷, 悦章1 Browse this author →KAKEN DB
高丸, 広毅2 Browse this author
石井, 邦宜3 Browse this author
Authors(alt): Kashiwaya, Yoshiaki1
Takamaru, Hiroki2
Ishii, Kuniyoshi3
Keywords: coke
open pore
closed pore
micro-pore
gasification of coke
coke structure change
pore distribution
porosity of coke
Issue Date: 1-Aug-2003
Publisher: 日本鉄鋼協会
Journal Title: 鉄と鋼
Volume: 89
Issue: 8
Start Page: 819
End Page: 826
Publisher DOI: 10.2355/tetsutohagane1955.89.8_819
Abstract: According to the pulverized coal injection (PCI) to blast furnace (BF), the fine generation of coke in the lower part of BF especially around raceway has come to an important problem for stable operation. To clarify the mechanism of the fine generation from coke, the pore structure change before and after the gasification experiment has been investigated in previous study. In this study, the open and the closed pore were identified using SEM and the optical microscope observation. In the case of one directional penetration of fluorescent resin, the closed pore was about 5%, however, the actually existing closed pore would be less value, when the resin penetrated from many directions. The graphitized region in the coke was defined, where it was a dense and rectangle area and it included an anisotropic texture such as Mosaic, Fibrous and Leaflet texture. The micro-pore less than 10 μm mainly existed in the graphitized structure. The graphitized structure has low reactivity and remains until high temperature region more than 1500°C. From these results, it was found that the micro-pore less than 10 μm does not relate to the gasification reaction.
Rights: 著作権は日本鉄鋼協会にある
Type: article
URI: http://hdl.handle.net/2115/75642
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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