Title:
ESTIMATION METHOD OF POWDER RATE OF BLAST FURNACE RAW MATERIAL, AND OPERATION METHOD OF BLAST FURNACE
Document Type and Number:
Japanese Patent JP2015196888
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a control method of the powder rate of a blast furnace raw material, through more accurate perceiving of the powder rate of the raw material to be fed into a blast furnace.SOLUTION: The estimation method of the powder rate of a raw material 3 to be fed into a blast furnace 10 from a furnace top bunker 5 includes: obtaining at least any one of a first tilt angle, i.e. the slope angle of the piled raw material 3 fed in the furnace top bunker 5, and a second tilt angle, i.e. the slope angle of the raw material tilted upward to the sidewall of the furnace top bunker 5 from the position above an outlet 6, which is formed during discharge of the fed raw material 3 from the outlet 6 of the furnace top bunker 5; and estimating the powder rate of the raw material with the tilt angle obtained, based on the predetermined relationship between the tilt angle of a raw material and the powder rate, i.e. the relationship between the obtained tilt angle selected from the first tilt angle and the second tilt angle and the powder rate, and the obtained tilt angle.
Inventors:
NATSUI TAKUYA
NAKANO KAORU
SUNAHARA KOHEI
UEDA NAOYA
NAKANO KAORU
SUNAHARA KOHEI
UEDA NAOYA
Application Number:
JP2014076231A
Publication Date:
November 09, 2015
Filing Date:
April 02, 2014
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C21B5/00; F27D3/10; F27D21/00
Domestic Patent References:
| JPH03180412A | 1991-08-06 | |||
| JPH02205606A | 1990-08-15 | |||
| JPH03180410A | 1991-08-06 | |||
| JPH03180412A | 1991-08-06 | |||
| JPH02205606A | 1990-08-15 | |||
| JPH03180410A | 1991-08-06 |
Attorney, Agent or Firm:
Mizuno Katsufumi
Masayuki Kishida
Hiroshin Takano
Masayuki Kishida
Hiroshin Takano