The content of alumina in white corundum can reach more than 99%. The main impurities in white corundum are oxides of silicon, iron, titanium, and sodium. Nowadays, the sodium content of white corundum is generally required, and the price of low-sodium white corundum is about 200 RMB per ton.
Why should you care about the sodium content of white corundum?
If the sodium content in the white corundum abrasive is too high, a lot of β-alumina will be generated, which will affect the performance of the white corundum. For example, the hardness of the white corundum is reduced, the cutting ability is reduced, it is easy to pulverize and break, and the thermal stability is low.
Low-Na2O white corundum can be divided into two types:
low-Na2O white fused alumina and micro-Na2O white fused alumina, with Na2O content ≤0.2 and ≤0.1, respectively. Because of the decrease in sodium content, the properties of white corundum have been improved to a certain extent, such as melting point, particle density, bulk density, flexural strength, compressive strength, true density, hardness, etc. Low-sodium white corundum is mainly used in ceramics and advanced refractory materials.
Henan Sicheng Grinding Technology Co., Ltd. can customize low-sodium white corundum. About 0.1%.
For particle size analysis report and price, please contact cindyhu@hnsicheng.cn.
