Low sodium white corundum low sodium alumina/Low sodium white corundum low sodium alumina

Brief introductionLow sodium white corundum low sodium alumina products are widely used in special ceramics, refractory materials and other fields. The low sodium white corundum/low sodium alumina Na20 content is reduced to improve the melting point, particle density, bulk density, bending strength, compressive strength, true density and hardness of the product, which can meet the use of refractory and ceramic industries, broaden the scope of use, and lay a solid material foundation for the development of the above industries to the high precision. Low-sodium white corundum low-sodium alumina/micro-sodium white corundum micro-sodium alumina

Slightly sodium white corundum refers to white corundum with sodium oxide content between 0.01 and 0.09%, and its raw material is deeply processed alumina. Slightly sodium white corundum is a product with low sodium oxide content in white corundum,1 The sodium oxide content in ordinary white corundum is between 0.2-0.6%.

The main phase of white corundum is α-Al203.

Sodium oxide is a harmful impurity for white corundum. It forms B-A203 in the molten state with alumina, and the yield increases with the increase of sodium oxide content. B-Al203 has low melting point, low body density and low hardness. Na20 in white corundum is mainly in the form of NA20-11AL203 (B-A1203). If the alumina raw material contains more than 0.6% sodium oxide, the white corundum produced by it will contain more than 1% β-Al203