PROCESS FOR PREPARING ALUMINUM TITANATE POWDER AND PROCESS FOR PREPARING SINTERED BODY OF ALUMINUM TITANATE

摘要

This invention provides a process for preparing a powder of aluminum titanate, comprising the steps of subjecting to pressure molding a mixture of 100 parts by weight of a mixture of A12O3 and TiO2 at a molar ratio of the former : the latter of 1 : 0.95-1.05, 2 to 5 parts by weight of SiO2, 2 to 5 parts by weight of iron oxide calculated as Fe2O3 and 1 to 3 parts by weight of a powder of an organic substance; sintering the molded product at a temperature of 1600 to 1700.degree.C in a closed container; and pulverizing the molded product, and also provides a process for preparing a sintered body of aluminum titanate, comprising the steps of molding the powder of aluminum titanate obtained by the above-mentioned process and sintering the molded product at 1450 to 1550.degree.C.