MANUFACTURING METHOD OF METALLIC IRON

Title:

MANUFACTURING METHOD OF METALLIC IRON

Document Type and Number:

Japanese Patent JP2014227589

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a process of producing metallic iron by heating agglomerate including an iron oxide-containing material containing much gangue components and a carbonaceous reductant in a moving-hearth heating furnace, in which metallic iron can be efficiently recovered from the resulting reduction product including metallic iron and slag, obtained by heating the agglomerate.SOLUTION: A process of producing metallic iron includes the steps of: agglomerating a mixture including an iron oxide-containing material and a carbonaceous reductant; introducing the resulting agglomerate into a moving-hearth heating furnace 101, and reducing the agglomerate by heating; crushing the resulting reduction product including metallic iron and slag, discharged from the moving-hearth heating furnace, using a crusher 102 that exerts impact; screening the crushed product using a sieve a103 of which aperture is 3-5 mm; and recovering metallic iron 104 on the sieve a.

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Inventors:

SUGIYAMA TAKESHI
HARADA TAKAO
SHIINO JUNICHI
IIJIMA KATSUYUKI
OKA TAKANORI

Application Number:

JP2013110283A

Publication Date:

December 08, 2014

Filing Date:

May 24, 2013

Export Citation:

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Assignee:

KOBE STEEL LTD

International Classes:

C21B13/00; B02C13/00; B02C13/284; B02C21/00; B02C23/14; C22B1/16

Attorney, Agent or Firm:

Hisakazu Ueki
Hisahiko Ueki
Tadashi Sugawa
Hiroaki Ito

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