Title:
高炉炉下部の管理方法
Document Type and Number:
Japanese Patent JP4634660
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of controlling the lower part of blast furnace, which can stabilize the operation of a blast furnace, by using the readings of a pyrometer which is buried in a refractory to exclude disturbance on the cooling side of the pyrometer, precisely grasping the heat transfer amount in the furnace, and operating the blast furnace according to the conditions presumed from the heat transfer amount in the furnace. SOLUTION: This method comprises burying two or more pyrometers M1 and M2 perpendicularly into the refractories 14 and 16 in the lower part 12 of the blast furnace 11, grasping the progression of actual temperature based on a pair of measured values with pyrometers M1 and M2 , calculating the unsteady heat transfer amount while assuming the heat transfer amount in the furnace toward the operating side and the heat removal amount on the cooling side on the basis of the temperature of the molten pig iron, and determining simultaneously the heat transfer amount inside the furnace and the heat removal amount on the cooling side, by calculating the above obtained progression values so as to substantially match with the actual progression values measured with the pyrometers M1 and M2 , by a heat-transfer reverse analysis method.
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Inventors:
Kenichi Yatsugayo
Junichi Nakagawa
Junichi Nakagawa
Application Number:
JP2001204732A
Publication Date:
February 16, 2011
Filing Date:
July 05, 2001
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C21B5/00
Domestic Patent References:
| JP10273708A | ||||
| JP7207310A | ||||
| JP2002266011A | ||||
| JP2001234217A |
Attorney, Agent or Firm:
Fujio Nakamae