Production of a Binder from α-Aluminum Oxide and Corundum Non-Shrinkable Refractories Based on It for Use in Extreme Conditions

Abstract

Several grades of aluminum oxide have been studied, their preparation modes and testing methods have been worked out to obtain a binder for non-shrinkable refractories. Using mechanochemical methods, a binder based on prepared aluminum oxide of the TC 6-09-426-75 brand and an additive of zirconium oxychloride was obtained. After heat treatment at 1250°C, the maximum value of the compressive strength of the refractory samples is 120 MPa, the volume shrinkage of the samples is less than 1%.