The Advantage of Low sodium white aluminum oxide

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.

Here are several advantages of low sodium white aluminum oxide:

》》High hardness. The microhardness of low sodium white alumina can reach 2300-2400kg/mm2, while the microhardness of ordinary white alumina is 2200kg/mm2 β The hardness of alumina is only 1300-1600kg/mm2.

》》High compressive strength and flexural strength. In the refractory industry, high-strength low-sodium white alumina can be used as aggregate and castable. It improves the high-temperature and creep resistance of refractory products. In the field of grinding, low sodium white corundum has improved durability, and high particle strength, and is not easy to break and pulverize. As a result, it can increase the number of sandblasting cycles used. Used for producing white corundum grinding wheels, it can improve the grinding force of the grinding wheel and improve grinding efficiency.

》》High refractory temperature: Low sodium white alumina has a high melting point and excellent high-temperature resistance. As a high-temperature-resistant material, it can extend the service life of refractory products. As a grinding material, low sodium WFA is harder and tougher. Therefore, it has reliability and stability in processing processes that require high-temperature resistance.

》》High bulk density and specific gravity. Low sodium white corundum gets a high α-phase aluminum oxide content. Thus, it gains a higher volume density and specific gravity than ordinary white alumina, and a lower porosity. This is beneficial for improving the slag corrosion resistance of refractory products and increasing the high-temperature load softening temperature.

Overall, low sodium white aluminum oxide has advantages in application scenarios that require high sodium content, hardness, high-temperature resistance, and magnetism. It can improve the overall performance of refractory materials, grinding tools, and grinding.