Title:
METHOD FOR LOADING RAW MATERIAL INTO BLAST FURNACE
Document Type and Number:
WIPO Patent Application WO/2013/172043
Kind Code:
A1
Abstract:
In the blast furnace operation method of the present invention, raw ore material such as sintered ore, pellets, or lump ore and a raw coke material for loading into a blast furnace are loaded into a blast furnace using a rotating chute. When forming a mixed layer in a predetermined region within the blast furnace by loading a mixed raw material comprising a mixture of the raw ore material and the coke into the blast furnace, with regards to a furnace wall peripheral region that has at least a dimensionless radius of 0.7-1.0 when the dimensionless radius of the blast furnace is configured so that the axial center section of the blast furnace serves as 0 and the furnace wall section serves as 1.0, deterioration of ventilation that may occur as a result of a grain size difference between the ore and the coke is advantageously resolved during loading of the raw ore material and the coke as a mixed layer into the furnace by setting the particle size ratio of coke and raw ore material in the mixed layer to be 3:1 or lower.
Inventors:
HIROSAWA TOSHIYUKI (JP)
WATAKABE SHIRO (JP)
ISHII JUN (JP)
ICHIKAWA KAZUHIRA (JP)
WATAKABE SHIRO (JP)
ISHII JUN (JP)
ICHIKAWA KAZUHIRA (JP)
Application Number:
PCT/JP2013/003169
Publication Date:
November 21, 2013
Filing Date:
May 17, 2013
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21B5/00
Foreign References:
| JP2004307928A | 2004-11-04 | |||
| JPS5579810A | 1980-06-16 | |||
| JP2012092411A | 2012-05-17 | |||
| JP2010215949A | 2010-09-30 | |||
| JPS61243107A | 1986-10-29 |
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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