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

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%.