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Title:
PRODUCTION METHOD OF METAL IRON
Document Type and Number:
WIPO Patent Application WO/2003/020988
Kind Code:
A1
Abstract:
A technique capable of producing metal iron high in metallization and iron purity with high yield and efficiency by minimizing a metal iron re−oxidizing problem encountered at the end of solid reduction when producing metal iron by heating&sol reducing material substances including an iron−oxide−containing substance and a carbonaceous reducing agent. A method of producing metal iron by heating material substances including an iron−oxide−containing substance and a carbonaceous reducing agent in a moving hearth type reducing&sol melting furnace, and reducing&sol melting the iron oxide in the material substances, wherein the reducing&sol melting furnace is partitioned into at least three sections in the moving direction of the hearth − namely, a solid reducing section on the upstream side in the hearth moving direction, a carburizing&sol melting section on the downstream side, and a reducing&sol aging section between the solid reducing section and the carburizing&sol melting section.

Inventors:
Kikuchi, Shoichi c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO 5-5 (Takatsukadai 1-chome Nishi-ku Kobe-shi, Hyogo, 651-2271, JP)
Tokuda, Koji c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO 5-5 (Takatsukadai 1-chome Nishi-ku Kobe-shi, Hyogo, 651-2271, JP)
Kobayashi, Isao c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO 5-5 (Takatsukadai 1-chome Nishi-ku Kobe-shi, Hyogo, 651-2271, JP)
Application Number:
PCT/JP2002/005997
Publication Date:
March 13, 2003
Filing Date:
June 17, 2002
Export Citation:
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Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohamacho 2-chome Chuo-ku Kobe-shi, Hyogo, 651-8585, JP)
Kikuchi, Shoichi c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO 5-5 (Takatsukadai 1-chome Nishi-ku Kobe-shi, Hyogo, 651-2271, JP)
Tokuda, Koji c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO 5-5 (Takatsukadai 1-chome Nishi-ku Kobe-shi, Hyogo, 651-2271, JP)
Kobayashi, Isao c/o Kobe Corporate Research Laboratories in KABUSHIKI KAISHA KOBE SEIKO SHO 5-5 (Takatsukadai 1-chome Nishi-ku Kobe-shi, Hyogo, 651-2271, JP)
International Classes:
C21B13/00; C21B13/10; F27B9/16; (IPC1-7): C21B13/10
Foreign References:
JP2001020005A
JPH11172312A
JP2001181719A
Other References:
See also references of EP 1422300A1
Attorney, Agent or Firm:
Kotani, Etsuji (Nichimen Building 2nd Floor, 2-2 Nakanoshima 2-chom, Kita-ku Osaka-shi Osaka, 530-0005, JP)
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