PRODUCTION METHOD OF METAL IRON

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 (JP)
TOKUDA KOJI (JP)
KOBAYASHI ISAO (JP)

Application Number:

PCT/JP2002/005997

Publication Date:

March 13, 2003

Filing Date:

June 17, 2002

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)
KIKUCHI SHOICHI (JP)
TOKUDA KOJI (JP)
KOBAYASHI ISAO (JP)

International Classes:

C21B13/00; C21B13/10; F27B9/16; (IPC1-7): C21B13/10

Foreign References:

JP2001020005A	2001-01-23
JPH11172312A	1999-06-29
JP2001181719A	2001-07-03

Other References: