Title:
高炉の操業方法
Document Type and Number:
Japanese Patent JP7151228
Kind Code:
B2
Abstract:
To provide a blast furnace operation method capable of being applied regardless of a blast furnace structure and controlling a gas flow optimally in consideration of local stock profile.SOLUTION: The blast furnace operation method in which iron ore and coke are charged alternately from the furnace top comprises a measurement step (S1) for obtaining a measurement graph showing at least one of relationships between a position in a furnace radial direction and a gas utilization rate or a temperature at lower part of burden pile in the blast furnace, an identifying step (S2) for comparing the measurement graph with a target operation graph showing a relationship between a position in the radial direction and a gas utilization rate or a temperature in a target blast furnace operation, and identifying a position in the radial direction where a difference in a gas utilization rate or a temperature is 20% or more as a problematic position, and a charging step (S3) for charging the iron ore or the coke after adjusting a charging amount for a next charge so that the difference in gas utilization or temperature is less than 20% in the problematic position.SELECTED DRAWING: Figure 1
Inventors:
Kosho Matsuda
Ryosuke Nishikawa
Kadowaki Masato
Ryosuke Nishikawa
Kadowaki Masato
Application Number:
JP2018133022A
Publication Date:
October 12, 2022
Filing Date:
July 13, 2018
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C21B5/00; C21B7/24; F27B1/28
Domestic Patent References:
| JP2016065275A | ||||
| JP2016183373A | ||||
| JP54037004A |
Attorney, Agent or Firm:
Intellectual Property Office
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