Abstract

A technology is described for making a heat-insulating bonite (hexaaluminate) filler based on a high-alumina material (a recycled catalyst support) and high-alumina cement. The properties of the filler and heat-insulating concretes made with it are also described. The concretes are distinguished by their high strength and deformability, low thermal conductivity, and minimal shrinkage up to 1450°C. They can be recommended for use in high-temperature thermal insulation.

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