Sintered corundum

- Jun 12, 2019-

Sintered corundum, also known as sintered alumina or semi-molten alumina, is a refractory clinker made by calcining alumina or industrial alumina as a raw material, which is ground into a ball or a green body and sintered at a high temperature of 1750~1900 °C. The sintered alumina containing more than 99% of aluminum oxide is directly combined by uniform fine-grained corundum. The gas-producing rate is below 3.0%, the bulk density is 3.60%/m3, the refractoriness is close to the melting point of corundum, and it has good volume stability and chemical stability at high temperature, and is not eroded by reducing atmosphere, molten glass and molten metal. , normal temperature, high temperature mechanical strength and wear resistance.