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Title:
METHOD FOR RECONSTRUCTING BLAST FURNACE
Document Type and Number:
Japanese Patent JP2005298889
Kind Code:
A
Abstract:

To provide a reconstructing method with which the bottom part of a blast furnace is separated from a furnace foundation concrete of the blast furnace and in the case of removing the bottom part by holding up and separating from the setting place, the drop-down thereof into gap of a thermally worsened concrete is not developed and a gap for setting a lateral shifting means for the bottom part of the blast furnace can be secured.

This reconstructing method is performed to the reinforcement for filling grout after setting a bar-like member 78 into a first through-hole 77 penetrating the lowermost step bedding beam 63, concrete layer 61a and the grout 64, set in the recessed part formed in the uppermost surface concrete layer 61a of the foundation concrete 61 of the blast furnace. A second through-hole 79 is bored in the horizontal direction in the foundation concrete at the lower side of the first through-hole and the foundation concrete is horizontally cut off at the position of the second through-hole and the bottom part 66 of the blast furnace are cut off and the gap 75 is formed by rising up the bottom part of the blast furnace with a hydraulic pressure jack 74 etc., and a shifting means, such as rollers, is set in the gap 75, and the bottom part of the blast furnace is laterally shifted.


Inventors:
ENOKIDA TADAHIRO
TAKANO YOSHIHIRO
MARUYAMA NORIO
KUDO KOJI
Application Number:
JP2004116050A
Publication Date:
October 27, 2005
Filing Date:
April 09, 2004
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
C21B7/00; (IPC1-7): C21B7/00
Domestic Patent References:
JPH1096005A1998-04-14
JP2003245919A2003-09-02
Attorney, Agent or Firm:
林 信之