The tabular alumina is a sintered corundum which is sintered by using alumina in an ultra-high temperature state. It has a crystal structure with coarse and well-developed α-Al2O3 crystal structure. The crystal structure is plate-like, and the Al2O3 content is above 99%. Low porosity, water absorption, high purity, good volume stability, minimal re-sintering shrinkage, good thermal shock resistance, erosion resistance and flexural strength after high temperature treatment of refractory or castables .