Iron Carbide Synthesis by Reaction of Iron Ore with H2-CH4 Gas Mixtures Containing Traces of Sulfur.

• Hayashi Shoji

  Department of Materials Science and Engineering, Nagoya Institute of Technology

• Iguchi Yoshiaki

  Department of Materials Science and Engineering, Nagoya Institute of Technology

Abstract

Particles of hematite ores in a porcelain boat were reacted at 873∼1273 K by H₂-CH₄ mixtures having low sulfur activities a_s based on Fe/FeS equilibrium where metallic iron remained stable. In the tests without sulfur, much free carbon appeared beside metallic iron and iron carbide. The free carbon increased with temperatures. In the tests with sulfur, nearly one hour reaction could convert their particles mostly to iron carbide such as Fe₃C, especially favorable in a_s=0.1∼1.0 at 1173∼1223 K. The conversion yield was sensitive to inlet flow volume ratio H₂/CH₄ and ore type, while the authors' previous test in H₂-CO gas mixtures had already indicated their insensitivity.

Journal

• ISIJ International

  ISIJ International 37 (4), 345-349, 1997

  The Iron and Steel Institute of Japan

Keywords

• iron carbide
• iron ore
• H₂-CH₄ gas mixture
• gaseous reduction
• carburization
• gaseous sulfur

Details

• CRID: 1390282681430759424
• NII Article ID: 10002455432
• NII Book ID: AA10680712
• DOI: 10.2355/isijinternational.37.345
• COI: 1:CAS:528:DyaK2sXjs1CmtL8%3D
• ISSN: 13475460
• ISSN: 09151559
• ISSN: http://id.crossref.org/issn/09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/37/4/37_4_345/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed