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Title:
回転炉床炉およびその運転方法
Document Type and Number:
Japanese Patent JP4963396
Kind Code:
B2
Abstract:

To provide a rotary hearth furnace and a method of operating it for complete combustion of combustible components remaining in exhaust gas generated in a rotary hearth furnace without posing any problem on, for example, production of reduced iron so as to attain effective utilization in heating/reduction and improve fuel consumption property.

The rotary hearth furnace 1 is equipped with an exhaust gas discharge unit 8. The exhaust gas discharge unit 8 includes a cell forming part 12a and a ventilation duct 13. The cell forming part 12a is provided in a part of an exhaust gas discharge region of ceiling part of the rotary hearth furnace, and the ventilation duct 13 is connected to the cell forming part. The lower face of the cell forming part 12a is higher than those of other ceiling parts, and a cell 9 is formed in the cell forming part to retain exhaust gas. Preferably, a cooling medium blowing nozzle 16 is provided for the ventilation duct 13.

COPYRIGHT: (C)2007,JPO&INPIT


Inventors:
Yoshihiko Tetsumoto
Sumito Hashimoto
Koji Tokuda
Application Number:
JP2006283000A
Publication Date:
June 27, 2012
Filing Date:
October 17, 2006
Export Citation:
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Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
F27B9/30; C21B13/10; C22B5/10; C22B7/02; F27B9/04; F27B9/16; F27D17/00
Domestic Patent References:
JP2001089805A
JP11248359A
JP42016842B1
JP2001107120A
Foreign References:
WO2007052621A1
Attorney, Agent or Firm:
Takenaka Yoshimichi
Yoshiyuki Kaji
Makoto Suhara
Seiji Kameoka
Hironori Takenaka
Toru Sakatani



 
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