METHOD OF MANUFACTURING METAL IRON - MIDREX INT BV ZUERICH

Title:

METHOD OF MANUFACTURING METAL IRON

Document Type and Number:

WIPO Patent Application WO/2003/008652

Kind Code:

A1

Abstract:

A method of manufacturing metal iron capable of increasing the operation rate and maintainability of a hearth and being adapted to a long term continuous operation by allowing metal iron powder to be easily removed and the surface of the hearth to be easily repaired even if the metal iron powder is buried in the surface of the hearth or the surface is subjected to the invasion or erosion of slag in the production of the metal iron where a mixture containing carbonaceous reducer and iron oxide is fed onto the hearth of a movable floor type reducing melting furnace and heated to melt the iron oxide for reduction, and the metal iron thus obtained is cooled and discharged to the outside of the furnace for collection, comprising the steps of forming a renewable hearth by laying down hearth materials on the hearth in layer form before the mixture is supplied thereto and renewing a part or all of the renewed hearth deteriorated in the operation by using the hearth materials.

Inventors:

TSUGE OSAMU (JP)
TANIGAKI YASUHIRO (JP)
KOBAYASHI ISAO (JP)
TOKUDA KOJI (JP)
KIKUCHI SHOICHI (JP)
ITO SHUZO (JP)

Application Number:

PCT/JP2002/005995

Publication Date:

January 30, 2003

Filing Date:

June 17, 2002

Export Citation:

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Assignee:

MIDREX INT BV ZUERICH (CH)
TSUGE OSAMU (JP)
TANIGAKI YASUHIRO (JP)
KOBAYASHI ISAO (JP)
TOKUDA KOJI (JP)
KIKUCHI SHOICHI (JP)
ITO SHUZO (JP)

International Classes:

C21B13/00; C21B11/08; C21B13/08; C21B13/10; F27D1/00; F27D1/16; C22B1/245; C22B5/10; (IPC1-7): C21B13/10

Foreign References:

US6251161B1	2001-06-26
JPS5554340U	1980-04-12
JP2001181719A	2001-07-03

Other References: