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Title:
REFRACTORY AGGREGATE, METHOD FOR MANUFACTURING SAME, AND REFRACTORY EMPLOYING SAME
Document Type and Number:
WIPO Patent Application WO/2017/170840
Kind Code:
A1
Abstract:
Problem: To ensure a satisfactory strength in an amorphous refractory manufactured by using a porous, heat insulating aggregate having CaO·6Al2O3(CA6) in a crystal phase and to suppress detachment and collapse thereof. Solution: When sieved into particle sizes of 3 mm or greater and less than 6 mm, in the boiling test defined in JIS R 2205:1992, by setting the water absorption rate to be 50-100% and by setting the bulk density to be 0.40-0.60 g/cm3, the breaking strength of CA6 particles is improved, and, in the case in which a refractory is manufactured by using the CA6 particles, the area of the interface between the CA6 particles in the refractory and matrix substances is increased, which increases the bonding strength therebetween, and thus, the strength of the refractory is improved.

Inventors:
NONOGAKI Ryozo (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
HIRATA Satoshi (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
KOYAMA Atsunori (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
IKEDA Tatsuya (1 Shinkai-machi, Omuta-sh, Fukuoka 10, 〒8368510, JP)
Application Number:
JP2017/013189
Publication Date:
October 05, 2017
Filing Date:
March 30, 2017
Export Citation:
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Assignee:
DENKA COMPANY LIMITED (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku Tokyo, 38, 〒1038338, JP)
International Classes:
C04B35/44; C04B35/66; F27D1/10; F27D1/16; C04B14/30
Foreign References:
JP2014037327A2014-02-27
JP2012072014A2012-04-12
JP2002179471A2002-06-26
Attorney, Agent or Firm:
SONODA & KOBAYASHI INTELLECTUAL PROPERTY LAW (34th Floor, Shinjuku Mitsui Building 1-1, Nishi-Shinjuku 2-chome, Shinjuku-k, Tokyo 34, 〒1630434, JP)
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