Infiltration of Metallurgical Coke by Pyrolysis of CH4 and Its Effect on Enhancement of CSR.

• Shigeno Yoshihito

  Graduate School of International Cultural Studies, Tohoku University

• Evans James Williams

  Department of Materials Science and Mineral Engineering, University of California

• Yoh Itsumei

  Coulter Japan Scientific Instruments Company, Ltd.

抄録

Metallurgical coke was modified by infiltrating carbon within the pores by methane pyrolysis. The rate of oxidation with CO₂ was lowered and the mechanical strength after partial oxidation was enhanced. CSR (Coke Strength after CO₂ Reaction) of regular coke for a blast furnace increased from about 56 to 77. This enhanced value corresponds to that of the extremely high-grade coke. The mechanism was considered in terms of the pore structure changes and was elucidated as follows:<br> Original metallurgical coke has a negligibly small volume of micropores but it increases rapidly during oxidation. In the case of infiltration, carbon deposits mainly in the mesopores. This carbon restricts the rapid increase in the volume of the micropores during oxidation, which is attributed to depress the oxidation rate. As it has been realized that generally the coke with the higher resistance to oxidation has the higher CSR, the depression effect onto the oxidation rate is deduced to result in the extreme enhancement of CSR.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 38 (1), 28-35, 1998

  一般社団法人 日本鉄鋼協会

キーワード

• methane
• pyrolysis
• CVI
• chemical vapor infiltration
• metallurgical coke
• CSR
• pore
• micropore
• mesopore

詳細情報

• CRID: 1390282681428098176
• NII論文ID: 10002458191
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.38.28
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/38/1/38_1_28/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可