Low sodium white aluminum oxide is an advanced form of white corudum. White Fused aluminum oxide with Na2O content of less than 0.2% and less than 0.1% is fused from a mixture of low soda alumina powder and special additives. It reduces the smelting process β The content of alumina has increased α Aluminum oxide conversion rate. β Aluminum oxide is harmful to all aspects of the performance of white alumina without any benefits. It has a negative impact on the microhardness, bending strength, thermodynamic properties, specific gravity, and density of white alumina. The α-phase conversion rate of normal WFA is about 90% with sodium content of 0.3-0.4%. That is not conducive to the better grinding and fire resistance performance of white alumina.