Title:
HEAT INSULATING REFRACTORY
Document Type and Number:
Japanese Patent JP2958285
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain heat insulating refractories having satisfactory heat insulating property, volume stability, spalling resistance, strength and lightness in weight fit for a tunnel as well as for an industrial furnace and for construction and causing no harmfulness at the time of a fire.
SOLUTION: The heat insulating refractories contains 11-15 pts.wt. (expressed in terms of CaO) alumina cement, 5-10 pts.wt. superfine powdery amorphous silica and 4-12 pts.wt. lightweight aggregate contg. ≤9 wt.%, in total, of Na2O and K2O in refractories contg. sepiolite, wollastonite and reinforcing fibers, preferably 10-30 pts.wt. sepiolite of 100 μm to 3 mm average fiber length, 2-30 pts.wt. wollastonite of 50-500 μm average fiber length and 0.5-2 pts.wt. reinforcing fibers of 0.5-10 mm average fiber length. Vinylon fibers are suitable for use as the reinforcing fibers.
Inventors:
MATSUO YUKIHISA
KURODA KOTARO
KURODA KOTARO
Application Number:
JP11410197A
Publication Date:
October 06, 1999
Filing Date:
May 01, 1997
Export Citation:
Assignee:
KUROSAKI YOGYO KK
International Classes:
E21D11/04; C04B14/08; C04B28/06; C04B35/66; C04B38/08; E04B1/94; E21D11/10; (IPC1-7): C04B35/66; C04B38/08; E04B1/94; E21D11/04; E21D11/10
Domestic Patent References:
| JP6464804A |
Attorney, Agent or Firm:
Masashi Kobori (1 person outside)