REFRACTORY SUPPORTS

摘要

The invention relates to refractory supports such as kiln furniture used in the manufacture of ceramic articles and to a method of making them. The refractory support is a formed fired mass comprising bound alumina or aluminosilicate fibres with a filler and reactive binder, the binder containing both alumina and silica of colloidal particle size. Products can be made having the desired density, thermal mass and strength properties with reduced tendency to stick to the articles they support when the latter are being fired. A forming method to make the supports comprises preparing an aqueous slurry of the constituents, forming the slurry to a pre-form shape, e.g. by vacuum-forming, and pressing the preform followed by firing.