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Title:
高炉に装填材を供給する方法
Document Type and Number:
Japanese Patent JP5503734
Kind Code:
B2
Abstract:
The present invention proposes a method for feeding a burden to a blast furnace (32), wherein the method comprises providing a charging device (38) having at least one material hopper (40), the material hopper (40) comprising a hopper chamber (42), a material inlet aperture for feeding a burden into the hopper chamber (40), and a material discharge aperture for feeding a burden from the hopper chamber (40) to the blast furnace (32); the material inlet aperture having an associated inlet seal valve 44) for opening and closing the material inlet aperture and the material discharge aperture having an associated material discharge valve (46) for opening and closing the material discharge aperture. The method further comprises opening the material inlet aperture and closing the material discharge aperture; feeding a burden into the hopper chamber (40) through the material inlet aperture; closing the inlet seal valve (44); pressurizing the hopper chamber (40) by feeding pressurizing gas into the hopper chamber (40); and opening the material discharge valve (46) and feeding the burden from the hopper chamber (40) to the blast furnace (32). According to an important aspect of the invention, the method comprises feeding a predetermined amount of pressurized flushing gas through the hopper chamber (42) before pressurizing the hopper chamber (42), wherein the flushing gas comprises at least 75% carbon dioxide.

Inventors:
Lutosh, Jean-No
Simos, Jean-Paul
Ausmer, Lionel
Application Number:
JP2012507690A
Publication Date:
May 28, 2014
Filing Date:
April 22, 2010
Export Citation:
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Assignee:
PAUL WURTH S.A.
International Classes:
C21B7/18; C21B5/00; C21B5/06; C21B7/20; F27D17/00
Domestic Patent References:
JP61187361U
JP2004309067A
JP54080206A
JP58161715A
JP2008247929A
JP2009133601A
Attorney, Agent or Firm:
Yoshiaki Sato



 
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