Low Sodium White Corundum Low Sodium Alumina/Low Sodium White Corundum Low Sodium Alumina
Low 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, which improves the melting point, particle density, bulk density, bending strength,...
Low 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, which improves 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 high precision. Low-sodium white corundum low-sodium alumina/micro-sodium white corundum micro-sodium alumina.
Micro-sodium white corundum refers to white corundum containing sodium oxide between 0.01 and 0.09 %. Its raw material is deeply processed alumina. Micro-sodium white corundum is a product with low sodium oxide content among white corundum. The sodium oxide content in ordinary white corundum is between 0.2-0.6 %.The main phase of micro-sodium white corundum is α -AI2O3.Sodium oxide is a harmful impurity for white corundum. It and aluminum oxide generate ß-Al2O3 in the molten state, and theamount of generation increases with the increase of sodium oxide content. ß-Al2O3 has a low melting point, low bulk density, andlow hardness. Na20 in white corundum mainly appears in the form of Na2O 11AL203 (B-Al2O3).If the alumina raw materialcontains more than 0.6% sodium oxide, the white corundum produced from it will contain more than 10% β- Al2O3Compared with - AI203,β-AI203 has a lower melting point, a lower density, and a lower hardness, as shown in the table below.
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