C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/137, 261/43
C04B 35/82 (2006.01) C04B 33/132 (2006.01) C04B 35/20 (2006.01) C04B 38/06 (2006.01)
Patent
CA 1149421
ABSTRACT OF THE DISCLOSURE The invention relates to a light-coloured extruded firebrick said light beige colour changing to red brown upon heating said brick at a temperature of from 1170° C to 1250 C comprising a fired mixture of from 65 to 75% by weight of chry- sotile asbestos residues having a particle size selected from ?0.400 to ?0.750 mm and mixtures thereof 20 to 30% by weight of plastic glacial clay and to 3 to 5% by weight of hydrated lime. There may also be incorporated up to 15% by volume of sawdust to provide a firebrick with microscopic voids which reduce the weight of the brick up to 10% and give to the brick insulating properties
353435
Aitcin Pierre-Claude
Chevalier Jean-Pierre
Goudreau Gage Dubuc
Societe Nationale de L'amiante
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