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Title:
METHOD FOR OPERATING BLAST FURNACE
Document Type and Number:
WIPO Patent Application WO/2011/052798
Kind Code:
A1
Abstract:
Provided is a method for stably operating a blast furnace in which ferro coke is used, by optimizing the amount of the ferro coke to be used. An ore and cokes comprising ferro coke and chamber oven coke are introduced into a blast furnace. The amount of the ferro coke to be used is 2-50 mass% of the cokes. It is preferred that the amount of the ferro coke to be used should be 25 mass% or more. The ferro coke has a particle diameter of preferably 15-40 mm. The ferro coke has an iron content of preferably 10-40 mass%.

Inventors:
SATO TAKESHI (JP)
SUMI HIROYUKI (JP)
FUJIMOTO HIDEKAZU (JP)
ANYASHIKI TAKASHI (JP)
SATO HIDEAKI (JP)
Application Number:
PCT/JP2010/069645
Publication Date:
May 05, 2011
Filing Date:
October 28, 2010
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
SATO TAKESHI (JP)
SUMI HIROYUKI (JP)
FUJIMOTO HIDEKAZU (JP)
ANYASHIKI TAKASHI (JP)
SATO HIDEAKI (JP)
International Classes:
C21B5/00
Foreign References:
JP2007231326A2007-09-13
JP2008106320A2008-05-08
JP2008056985A2008-03-13
JP2006028594A2006-02-02
Other References:
SEIJI NOMURA ET AL.: "Kakushinteki Shinkaiseibutsu ni yoru Koro Netsu Hozontai Ondo Teigen Koka", CURRENT ADVANCES IN MATERIALS AND PROCESSES, vol. 22, no. 2, 1 September 2009 (2009-09-01), pages 746 - 749, XP008153126
"Tetsu- to-Hagane", vol. 87, 2001, THE IRON AND STEEL INSTITUTE OF JAPAN, pages: 357
"Tetsu- to-Hagane", vol. 79, 1993, THE IRON AND STEEL INSTITUTE OF JAPAN, pages: N618
KAWASAKI STEEL GIHO, vol. 6, 1974, pages 16
Attorney, Agent or Firm:
OCHIAI, Kenichiro (JP)
Ken-ichiro Ochiai (JP)
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