High Density Low Porosity Sintered Tabular Alumina Artificial Corundum
Description
Technical Parameters
Product Introduction
High density low porosity sintered tabular alumina artificial corundum has high quality, good hexagonal sheet α -alumina crystals. The excellent thermal volume stability and thermal impact characteristics can be attributed to its special microstructure: large crystals with low porosity and closed spherical pores, which are captured during recrystallization during rapid sintering.
Tabular Alumina is a pure sintered corundum that undergoes thorough shrinkage without the addition of any additives such as MgO or B2O3. It has coarse and well-developed crystals α- The crystal structure of Al2O3 has a content of over 99%. The plate-like crystal structure has small pores with many closed pores, and the porosity is roughly equivalent to that of fused alumina. It has high purity, good volume stability, and minimal re firing shrinkage. The refractory or castable used for production has good thermal shock stability and bending strength after high-temperature treatment, but its price is higher than other alumina.
Advantages
1. High hardness: The hardness of high density low porosity sintered tabular alumina artificial corundum is very high, second only to natural diamonds. According to the Mohs hardness rating, the hardness of plate-like corundum is 9, which is the second highest material in natural gemstones after diamonds. This means that the plate-like corundum is very wear-resistant, not easily scratched or worn, and can maintain a long-lasting luster.
2. High temperature resistance: Tabular Alumina has excellent high temperature resistance and can resist thermal shock and expansion in high-temperature environments. This makes plate-like corundum an ideal material for making high-temperature tools and refractory ceramics.
3. High compressive strength: Tabular Alumina has excellent compressive strength and can withstand high pressure without easily breaking or deforming. This makes plate-like corundum an ideal material for making high-strength tools and mechanical parts.
4. Excellent chemical stability: Tabular Alumina exhibits excellent stability in common chemical substances and is not easily corroded or oxidized. It can resist acid and alkali corrosion and chemical solution corrosion, making it an ideal material for making chemical experimental vessels and chemical equipment.
5. Low thermal conductivity: Tabular Alumina has a lower thermal conductivity and can effectively insulate heat. This makes it an ideal choice for making insulation materials to protect high-temperature equipment and reduce energy loss.
6. Good electrical insulation: Tabular Alumina is a good electrical insulation material that can block the flow of current. This makes it an ideal material for making electrical insulation components and electronic components.
Application
Steel, Foundry, Cement, Petrochemical, Ceramic and waste incineration., Electrical insulators, Kiln furniture and as a catalyst support.
Product Parameter
| Composition Type | Al2O3% | SiO2 % | Na2O % | Fe2O3 % | Bulk density g\cm3 | Porosity % | Moisture % |
| MA-35 | ≥99.2 | ≤0.20 | ≤0.40 | ≤0.10 | ≥3.50 | ≤5.0 | ≤1.50 |
| Typical value | 99.5 | 0.1 | 0.36 | 0.08 | 3.55 | 3.6 | 1 |
FAQ
Q.What's your typical value of bulk density?
W.Standard is more than 3.5g/cm3, but normally, we can over 3.55g/cm3.
Q.What's the mainly market of tabular alumina?
W.Europe, India, Iran, Turkey, Ukraine, Egypt, etc.
Q.What's your supply capacity of tabular alumina?
W.We can provide more than 50,000 tons per year.
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