Tabular alumina has high purity, good volume stability, and extremely small re-firing shrinkage. The refractories or castables produced from it have good thermal shock stability and flexural strength after high-temperature treatment.
|
Index |
Tabular Alumina |
Low Na2O Tabular Alumina |
Lower Na2O Tabular Alumina |
|
AL2O3 |
99.2%min |
99.30%min |
99.35%min |
|
Fe2O3 |
0.10% max |
0.10%max |
0.10%max |
|
Na2O3 |
0.35% max |
0.20%max |
0.10% max |
|
SiO2 |
0.19% max |
0.19% max |
0.19% max |
|
Bulk density |
3.55g/cm3 min |
3.55g/cm3 min |
3.6g/cm3 min |
|
Porosity |
5.00% max |
3.0% max |
2.5% max |
|
Water absorption |
1.0%max |
0.8% max |
0.7% max |
|
size |
As per customer's requirement.(0-1mm,1-3mm,3-5mm,5-8mm and powder) |
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Packing: 1 MT big bag or 25kg paper bag on one pallet; As per customer's requirement.
Tabular Alumina Has Performance Characteristics
High hardness
The Tabular alumina hardness is usually between 9.0 and 9.5 levels, which is harder than traditional metal and plastic materials, and can effectively grind hard materials.
High density
The density of Tabular alumina is typically between 3.8 and 3.9g/cm³, several times higher than that of common metallic materials.
Strong wear resistance
It can withstand a large amount of wear and friction, maintain a sharp grinding surface for a long time, and improve work efficiency and processing quality.
High compressive strength
Capable of withstanding a pressure of over 2000MPa.
Good insulation performance
It can be used to manufacture insulators in electronic components, etc.
High refractoriness
The refractoriness is greater than or equal to 1800 degrees, and its melting point reaches 2050 degrees. Tabular alumina can maintain stable physical and chemical properties at high temperatures and is not prone to melting or deformation.
Tabular alumina High corrosion resistance
Stable chemical properties, not corroded by most acids, alkalis, solvents, etc., and can be used in extreme chemical environments
High erosion resistance
It can resist the erosion of high-temperature molten slag, molten iron, etc.
It has excellent thermal stability
It features extremely small re-firing shrinkage and good thermal shock stability. The refractory materials or castables used for production can withstand sudden temperature changes without cracking or peeling after high-temperature treatment.
Tabular Alumina Application Fields
In the field of refractory materials: Tabular alumina can be used as the main component in aluminum-carbon, aluminum-magnesium-carbon, magnesium-aluminum-carbon, magnesia-spinel, and aluminum-chromium refractory bricks, and can also be introduced as an enriched alumina component into high-aluminum non-uniform refractory materials. It is widely used in equipment such as blast furnaces, pig iron cars, steel ladles, intermediate boxes, RH furnaces, nozzles, sliding nozzles in the steel industry, as well as high-temperature equipment linings in the casting and ceramics industries.
In the field of mechanical processing: Tabular alumina can be made into corundum grinding wheels, tools, cutting tools, etc., and used in high-speed drilling, milling, cutting, grinding and polishing processes, effectively improving processing efficiency, reducing processing costs and prolonging tool life.
In the field of electronic industry: Tabular alumina is used to manufacture semiconductor materials, capacitors, resistors, insulators and other electronic components. By taking advantage of its excellent insulation performance, high-temperature resistance and high mechanical strength, it can meet the usage requirements of electronic components under high-temperature, high-frequency and other conditions.
In the field of chemical industry: With its excellent corrosion resistance, Tabular alumina can withstand the erosion of strong acids, strong alkalis and high temperatures, and is used to manufacture the inner linings, seals and other components of chemical equipment, improving the service life and safety of chemical equipment.
In the field of petroleum industry: As materials for petroleum extraction, processing and storage equipment, such as pipelines and reaction vessels, Tabular alumina has the characteristics of wear resistance, corrosion resistance, high strength and high-temperature stability, adapting to the harsh working environment in the petroleum industry.
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