2021 wholesale price White Aluminum Oxide - Micro Sodium White Fused Alumina – Yufa
2021 wholesale price White Aluminum Oxide - Micro Sodium White Fused Alumina – Yufa Detail:
Compared With β-Al2O3 And α-Al2O3
Sodium oxide is a harmful impurity to white corundum. It forms β-Al2O3 with alumina in the molten state, and the amount of production increases with the increase of sodium oxide content. Na2O in white corundum mainly appears in the form of Na2O·11AL2O3 (β-Al2O3). For example, if the alumina raw material contains more than 0.6% sodium oxide, the white corundum produced with it will contain more than 10% β-Al2O3.
Compared with β-Al2O3, α-Al2O3 has ‘three highs’. First, it has a high melting point, Secondly a high density, and thirdly a high hardness, as shown in the following table:
| Phase | Chemical compositions | Crystal System | Density (g/cm3） | Micro hardness (Kg/mm²) | Melting point (℃) |
| α-Al2O3 | Al2O3 | Hexagonal | 4.0 | 2300 | 2050 |
| β-Al2O3 | Na2O·11Al2O3 | Trigonal | 3.24 | 1300~1600 | 1600 |
Advantages
The micro-sodium white fused alumina improves the melting point, particle density, bulk density, flexural strength, compressive strength, true density, hardness and other properties of white corundum products, laying a solid foundation for the product to enter the high-end market.
Applications
It is suitable for processing alloy steel, high hardness steel, high carbon steel and other materials with high hardness and high tensile strength.
Chemical Composition
| Chemical Composition | Na2O % ≤ | Al2O3 % ≥ | SiO2 % ≤ | Fe2O3 % ≤ |
| Gurantee Value | 0.06 | 99.7 | 0.1 | 0.05 |
| Typical Value | 0.02 | 99.89 | 0.04 | 0.03 |
Product detail pictures:
Related Product Guide:
"Based on domestic market and expand abroad business" is our progress strategy for 2021 wholesale price White Aluminum Oxide - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: Saudi Arabia, Rio de Janeiro, Yemen, By integrating manufacturing with foreign trade sectors, we can provide total customer solutions by guaranteeing the delivery of right products to the right place at the right time, which is supported by our abundant experiences, powerful production capability, consistent quality, diversified product portfolios and the control of the industry trend as well as our mature before and after sales services. We'd like to share our ideas with you and welcome your comments and questions.
By Genevieve from Tunisia - 2018.12.11 14:13
We feel easy to cooperate with this company, the supplier is very responsible, thanks.There will be more in-depth cooperation.
By Belle from Congo - 2018.06.03 10:17
