PULVERULENT COMPOSITION AND PROCESS FOR THE FABRICATION OF A REFRACTORY OBJECT USING THIS COMPOSITION

摘要

A pulverulent composition for admixture with a refractory aggregate and water to provide refractory articles, including bricks for the construction of thermal enclosures, comprises as a first portion, 70-96% by weight of silica, either vitreous or amorphous, of which the particles have a diameter lower than 1 mu m; as a second portion, 4-30% by weight of a compound capable of supplying 1-20% by weight of alkaline earth oxide; and as a third portion, 0.5-3% by weight of a fluidizing or dispersing agent.