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Title:
METHOD FOR MANUFACTURING DIRECT-REDUCED IRON FROM Cr- CONTAINING RAW MATERIAL
Document Type and Number:
Japanese Patent JP2003073721
Kind Code:
A
Abstract:

To enable an iron source material containing Cr to be used for direct- reduced iron manufacture, reduce necessary energy in a downstream process (electric furnace, converter or the like), shorten time for direct reduction, and at the same time, to miniaturize a facility for manufacturing direct-reduced iron and reduce heat dissipation quantity.

In a method for manufacturing direct-reduced iron by reducing a Cr-containing raw material which is molded from a mixture including a powdery iron source material containing Cr and a powdery solid reducing agent, the method for manufacturing direct-reduced iron from the Cr-containing raw material is characterized by adding a material containing MgO to the Cr- containing raw material, and making mass% of MgO to be 2% to 15% to the mass of the Cr-containing raw material. The material containing MgO preferably includes scrap of a refractory (MgO-C).


Inventors:
ICHIKAWA HIROSHI
Application Number:
JP2001260974A
Publication Date:
March 12, 2003
Filing Date:
August 30, 2001
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
C22B1/16; C21B13/10; C22B1/24; C22B7/00; (IPC1-7): C21B13/10; C22B1/16; C22B1/24; C22B7/00
Attorney, Agent or Firm:
Etsuichi Matsumoto (1 outside)