Title:
STAVE COOLER AND METHOD FOR REPAIRING THE SAME
Document Type and Number:
Japanese Patent JP2018115369
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a repairing method which can be carried out for a stave cooler being mounted on a furnace and does not lower the cooling efficiency after repair.SOLUTION: Provided is a method for repairing a stave cooler 20 to be mounted on an inner side surface of an iron shell 1 constituting a wall of a blast furnace. A cooling pipe 12 is welded to a furnace outer side surface of a copper main body part 11 of the stave cooler. Before mounting the stave cooler 20 on the iron shell 1, a welding support member 24 made of a metal having a thermal conductivity lower than that of copper is attached to at least one of the furnace outer side surface of the main body 11 and the peripheral surface of the cooling pipe 12. When a crack K is generated in a welded portion 13 after the stave cooler 20 is mounted on the iron shell 1 and water leakage occurs, the cooling pipe 12 is inserted through a hole 25a at the bottom surface of a vessel-like sealing member 25 and the seal member 25 is welded to the welding support member 24 in a state where the stave cooler 20 is attached to the iron shell 1.SELECTED DRAWING: Figure 3
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Inventors:
MAEDA KENGO
Application Number:
JP2017006682A
Publication Date:
July 26, 2018
Filing Date:
January 18, 2017
Export Citation:
Assignee:
NISSHIN STEEL CO LTD
International Classes:
C21B7/10; F27B1/14; F27D1/12
Attorney, Agent or Firm:
Hiroshi Yamamoto
Makiko Iwamoto
Fumihiko Matsumoto
Makiko Iwamoto
Fumihiko Matsumoto