In-furnace Conditions as Prerequisites for Proper Use and Design of Mud to Control Blast Furnace Taphole Length.

• Tsuchiya Nobuo

  Kawasaki Refractories Co., Ltd.

• Fukutake Tsuyoshi

  Technical Service Center, Kawasaki Steel Techno-Research Corporation

• Yamauchi Yutaka

  Ironmaking Division, Mizushima Works, Kawasaki Steel Corporation

• Matsumoto Toshiyuki

  Ironmaking Division, Chiba Works, Kawasaki Steel Corporation

Abstract

Increase in taphole length can be achieved if the taphole mud as injected stay at around the in-furnace taphole opening and sinters there. This can only be possible if the coke column and the mud mass make a good contact at the in-furnace taphole opening.<br> Theoretical calculation of the penetration depth of the coke column into the hearth showed that the degree of contact of the coke column with the mud mass may change in normal operation of blast furnace. <br> The degree of the contact can be controlled by controlling the raceway depth of tuyeres above the taphole concerned.

Journal

• ISIJ International

  ISIJ International 38 (2), 116-125, 1998

  The Iron and Steel Institute of Japan

Keywords

• iron making
• blast furnace
• hearth
• taphole
• coke column
• raceway
• mud
• free space
• taphole length

Details

• CRID: 1390001206452768512
• NII Article ID: 10002458500
• NII Book ID: AA10680712
• DOI: 10.2355/isijinternational.38.116
• COI: 1:CAS:528:DyaK1cXitFaktrY%3D
• ISSN: 13475460
• ISSN: 09151559
• ISSN: http://id.crossref.org/issn/09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/38/2/38_2_116/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed