Formation of Cementite from Titanomagnetite Ore

• Longbottom Raymond James

  School of Materials Science and Engineering, University of New South Wales

• Ostrovski Oleg

  School of Materials Science and Engineering, University of New South Wales

• Park Eungyeul

  School of Materials Science and Engineering, University of New South Wales

Abstract

This paper examines the formation of cementite in reduction of titanomagnetite ore by methane-containing gas. The reduction of titanomagnetite ore (New Zealand ironsand) by hydrogen–methane–argon gas mixtures was investigated from 600 to 1100°C. Iron oxides were reduced by hydrogen to metallic iron, which was carburised by methane to form cementite. The reduction rate increased with increasing hydrogen content in the reducing gas, while the methane content had no effect on the reduction process. Preoxidation of the titanomagnetite accelerated its reduction. Reduced iron in titanomagnetite was converted to cementite more slowly than in hematite.

Journal

• ISIJ International

  ISIJ International 46 (5), 641-646, 2006

  The Iron and Steel Institute of Japan

Keywords

• titanomagnetite
• cementite
• direct reduced iron
• reduction
• carburisation

Details

• CRID: 1390282681466110592
• NII Article ID: 10018046395
• NII Book ID: AA10680712
• DOI: 10.2355/isijinternational.46.641
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational/46/5/46_5_641/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed