Title:
THERMALLY INSULATING BLAST PLASTIC REFRACTORY
Document Type and Number:
Japanese Patent JPH1192239
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To obtain the material that simultaneously satisfies the weight- lightening of the material and the shrinkage (cracking) prevention of the worked body by adding specific amounts of hydraulic alumina cement as a binding aid, a dispersant, a binding accelerator and a thickener to a formulation containing fire clay and a refractory aggregate containing a light-weight aggregate at a specific ratio. SOLUTION: To a formulation of refractory aggregate containing light-weight aggregate, containing 20-40 wt.% of fire clay and the rest part of refractory aggregate whose particle size is adjusted, are added 1-8 wt.% of a hydraulic alumina cement, 0.01-1.0 wt.% of a dispersant, and 0.01-3.0 wt. % of a binding accelerator and a thickener, respectively. The refractory aggregate is, for example, sintered alumina, fused alumina, bauxite, aluminous shale, mullite, Chamotte fireclay, agalmatolite, kyanite and the like. The light-weight aggregate is, for example, light-weight chamotte, light-weight thermally insulating brick dust, pearlite, vermiculite and the like. The ratio of the light-weight aggregate to the refractory aggregate is suitably 20/80-60/40. The dispersant is preferably sodium tripolyphosphate and the binding accelerator is preferably slaked lime.
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Inventors:
AOKI YASUO
Application Number:
JP25193197A
Publication Date:
April 06, 1999
Filing Date:
September 17, 1997
Export Citation:
Assignee:
PLIBRICO JAPAN CO LTD
International Classes:
C04B35/66; (IPC1-7): C04B35/66
Attorney, Agent or Firm:
Hidetake Komatsu (2 outside)