Title:
SHRINKABLE RAMMING MATERIAL FOR BLAST FURNACE AND LINING STRUCTURE USING THE SAME
Document Type and Number:
Japanese Patent JP3590474
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a shrinkable ramming material having high thermal conductivity to be used for continuously absorbing and relaxing thermal stress generated in carbon bricks at the bottom or wall of a furnace in a temperature rage from 60 to 450°C during a long term operation of a blast furnace and to provide lining structure using the ramming material.
SOLUTION: This shrinkable ramming material 3 for blast furnace consists of a mixture obtained by compounding an aggregate containing a graphite raw material or an aggregate consisting of ≤10wt.% of one or more kinds selected from refractory raw materials and the balance of a graphite raw material with 10-30wt.% of a shrinking agent consisting of two or more kinds of solvents whose boiling points are different to each other and a phenolic resin. The shrinkable ramming material 3 forms voids during the elevation of temperature from 60°C to 450°C and has thermal conductivity of ≥20W/m.°C. Further, lining structure is produced by using the shrinkable ramming material 3 for blast furnace.
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Inventors:
Toshihisa Sasaki
Hisao Aibe
Tomoya Nakamura
Akira Ishii
Isamu Ide
Naoto Higuchi
Hisao Aibe
Tomoya Nakamura
Akira Ishii
Isamu Ide
Naoto Higuchi
Application Number:
JP10803696A
Publication Date:
November 17, 2004
Filing Date:
April 26, 1996
Export Citation:
Assignee:
Kurosaki Harima Co., Ltd.
Nippon Steel Corporation
Rignite Co., Ltd.
Nippon Steel Corporation
Rignite Co., Ltd.
International Classes:
C04B35/66; C21B7/06; F27B1/14; F27D1/14; (IPC1-7): C04B35/66; C21B7/06; F27B1/14
Domestic Patent References:
| JP57175779A | ||||
| JP63190766A | ||||
| JP53007713A |
Attorney, Agent or Firm:
Masu Kobori
Takato Tsutsumi
Takato Tsutsumi