Title:
流動還元炉の操業を改善した溶銑製造装置及びその溶銑製造方法
Document Type and Number:
Japanese Patent JP4191681
Kind Code:
B2
Abstract:
The invention relates to an apparatus and method for manufacturing molten iron. The method for manufacturing molten iron includes producing a mixture containing iron by drying and mixing iron-containing ore and additives, passing the mixture containing iron through one or more successively-connected fluidized beds so that the mixture is reduced and calcined to thereby perform conversion into a reduced material, forming a coal packed bed, which is a heat source in which the reduced material has been melted, charging the reduced material to the coal packed bed and supplying oxygen to the coal-packed bed to manufacture iron, and supplying reduced gas exhausted from the coal-packed bed to the fluidized bed, wherein in the conversion of the mixture to a reduced material, oxygen is directly supplied and combusted in an area where reduced gas flows to the fluidized bed. The apparatus for manufacturing molten iron of the invention uses this method for manufacturing molten iron. Through use of the invention, the reduced gas passing through the fluidized beds may be improved, and cohesion of the iron-containing fine ores may be prevented.
Inventors:
Shin, Myeong-Kyun
Lee, Ju-hyuk
Lee, Ju-hyuk
Application Number:
JP2004562101A
Publication Date:
December 03, 2008
Filing Date:
December 23, 2003
Export Citation:
Assignee:
POSCO
Research Institute of Industrial Science and Technology
Faust-Arpine Industrial Lagenbaum GM Behr und Zeau
Research Institute of Industrial Science and Technology
Faust-Arpine Industrial Lagenbaum GM Behr und Zeau
International Classes:
C21B13/00; C21B11/00; C21B13/14; F27D7/02
Domestic Patent References:
| JP6340909A | ||||
| JP7188721A | ||||
| JP11131118A | ||||
| JP62228882A | ||||
| JP2000026911A | ||||
| JP10287908A |
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune