PRODUCTION OF REDUCED IRON BRIQUETTE - KABUSHIKI KAISHA KOBE SEIKO SHO

Title:

PRODUCTION OF REDUCED IRON BRIQUETTE

Document Type and Number:

Japanese Patent JP3020494

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a method for producing a reduced iron by which the reduced iron briquette having high average quality can be obtd in high productivity.
SOLUTION: Iron oxide briquette containing carbonaceous material having almost 10-30 mm in the range of grain diameter, is laid on the furnace hearth of a shifting floor type heating furnace so that the laid density becomes ≤1.4 kg/m2/mm, and thereafter, the iron oxide briquette is rapidly heated so that the surface temp. thereof becomes ≥1200°C within 1/3 of the staying time of this iron oxide briquette in the shifting floor type heating furnace. The, after making the reduced iron briquette by reducing until the metalloid ratio of the iron oxide briquette becomes ≥85%, this reduced iron briquette is discharged from the moving floor type heating furnace.

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Inventors:

Koshiro Fuji
Hidetoshi Tanaka
Takao Harada
Ken Sugiyama
Yoshimichi Takenaka
Kazuya Miyagawa
Shoji Jouchi
Haruhisa Iwakiri
Makoto Nishimura
Takao Umeki
Sumito Hashimoto
Teruhisa Uehara

Application Number:

JP7761099A

Publication Date:

March 15, 2000

Filing Date:

March 23, 1999

Export Citation:

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Assignee:

KABUSHIKI KAISHA KOBE SEIKO SHO

International Classes:

C21B13/10; (IPC1-7): C21B13/10

Domestic Patent References:

JP10152711A
JP6232243B2

Attorney, Agent or Firm:

Kan Akeda

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