Influence of Shape of Cohesive Zone on Gas Flow and Permeability in the Blast Furnace Analyzed by DEM-CFD Model

• Ueda Shigeru

  Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University

• Kon Tatsuya

  Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University

• Kurosawa Hiroyuki

  Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University

• Natsui Shungo

  Faculty of Engineering, Hokkaido University

• Ariyama Tatsuro

  Professor Emeritus, Tohoku University

• Nogami Hiroshi

  Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University

Abstract

Maintaining gas permeability is an important issue to realize low coke rate operation of blast furnace. In present study, the melting behavior of the iron ore and the layer structure in low coke rate operation were introduced in to the DEM-CFD model, and then behaviors of gas and moving bed in the blast furnace were simulated. Influence of shape of cohesive zone in low coke rate operation was investigated, and the effect of coke slit in the cohesive zone on gas flow was demonstrated in the calculation result. Surface area of cohesive zone and intersection angle between the burden layers and cohesive zone will determine the activity of coke slit.

Journal

• ISIJ International

  ISIJ International 55 (6), 1232-1236, 2015

  The Iron and Steel Institute of Japan

Keywords

• blast furnace
• numerical simulation
• DEM-CFD model
• cohesive zone
• gas permeability

Details

• CRID: 1390001206488673408
• NII Article ID: 130005077651
• DOI: 10.2355/isijinternational.55.1232
• ISSN: 13475460
• ISSN: 09151559
• Web Site: https://www.jstage.jst.go.jp/article/isijinternational/55/6/55_1232/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed