| abstract |
A method for producing an α-alumina particulate is described. The method for producing an α-alumina particulate comprises steps (Ia) amd (Ib), or a step of (II): (Ia) removing water from a mixture containing water, a seed crystal and a hydrolysate obtained by hydrolysis of an aluminum compound under conditions of a Ph of 5 or less and a temperature of 60 DEG C or less, (Ib) calcining the resulted powder, (II) calcining a mixed powder containing 75 to 1 wt% of an α-alumina precursor (in terms of Al2O3) and 25 to 99 wt% of a seed crystal (in terms of oxide of metal component). |