Effect of Chute Angle on Charging Behavior of Sintered Ore Particles at Bell-less Type Charging System of Blast Furnace by Discrete Element Method

• Mio Hiroshi

  Research Center for Advanced Science and Technology, Doshisha University Kyoto Fine Particle Technology, Keihanna Interaction Plaza Inc.

• Komatsuki Satoshi

  Department of Chemical Engineering and Materials Science, Doshisha University

• Akashi Masatoshi

  Department of Chemical Engineering and Materials Science, Doshisha University

• Shimosaka Atsuko

  Department of Chemical Engineering and Materials Science, Doshisha University

• Shirakawa Yoshiyuki

  Department of Chemical Engineering and Materials Science, Doshisha University

• Hidaka Jusuke

  Department of Chemical Engineering and Materials Science, Doshisha University

• Kadowaki Masatomo

  Environmental and Process Technology Center, Nippon Steel Corporation

• Matsuzaki Shinroku

  Environmental and Process Technology Center, Nippon Steel Corporation

• Kunitomo Kazuya

  Environmental and Process Technology Center, Nippon Steel Corporation

抄録

The objective of this paper is to analyze the particle behavior at a bell-less top of blast furnace by using Discrete Element Method. The effect of chute angle on the flowing behavior or the particle segregation was discussed. The particles in the chute are centrifuged by the chute rotation with moving toward the outlet. The most of the smallest particles are pressed up against the chute side wall, while the larger ones stay at the outside of clustered particles due to the particle size segregation. The specific charged mass at charging area increases with increasing the number of charges, and the distribution of charged mass spreads toward the center of blast furnace, because the particles slide downward along with the slope of heap. The coke particles are pressed toward the center of blast furnace by the subsequently charged sintered ore particles with increasing the number of charges. The large collapse of coke layer is seen after 16 times charging under 36.9° and 43.1° in chute angle. It is found that the chute angle affects not only the particle segregation but also the collapse of coke layer strongly.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 49 (4), 479-486, 2009

  一般社団法人 日本鉄鋼協会

キーワード

• particle size segregation
• chute flow
• blast furnace
• bell-less charging system
• Discrete Element Method
• ironmaking process
• numerical simulation

詳細情報

• CRID: 1390001206486900608
• NII論文ID: 10027034102
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.49.479
• COI: 1:CAS:528:DC%2BD1MXltlanu7k%3D
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational/49/4/49_4_479/_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