High Temperature Sintered Tabular Alumina T64 For High Purity Corundum Bricks
Sintered High Temperature White Tabular Alumina T64 99.5% for High Purity Corundum Bricks
1. Tabular Alumina Introduction
High purity corundum brick is widely used as refractory lining for oil cracking unit, coal gasifier, carbon black furnaces, black liquor gasification and other industrial furnaces. This is attributable to the outstanding performance of corundum brick on chemical corrosion resistance, mechanical abrasion resistance and thermomechanical properties like high temperature strength, refractoriness under load and creep resistance, even in environments with corrosive gas or liquid and with high pressure.
2. Tabular Alumina Specifications
| Shape | Chemical compositions | Physical characteristics | |||||
| AL2O3 | Na2O | SiO2 | Fe2O3 | Bulk Density | Apparent Porosity | Water Absorption | |
| ≥% | ≤% | ≤% | ≤% | ≥g/cm3 | % | % | |
| Balls | 99.52 | 0.40 | 0.10 | 0.03 | 3.55 | 5 | 1.5 |
| Grains | 99.42 | 0.40 | 0.10 | 0.03 | 3.55 | 5 | 1.5 |
| Powder | 99.27 | 0.40 | 0.12 | 0.03 | - | - | - |
3. Tabular Alumina General Advantages
Chemical purity
Chemical inertness
High density
Low water absorption
Extreme hardness
High thermal conductivity
Good resistance to thermal and mechanical shock
High heat capacity
High electrical resistivity
Excellent abrasion resistance
4. Tabular Alumina Characteristics
The different processes for WFA and tabular alumina production (fusion vs. sinter) certainly create differences between the aggregate, which also have an impact on the properties and performance of the corundum brick. Tabular alumina is well received and extensively used in the refractories for steelmaking such as slide gate plate, Al2O3-MgOC brick, castables and pre-cast shapes. However, for a long period of time, WFA is very commonly used as the aggregate for high purity corundum brick to non-steel applications like gasifier and other industrial furnaces. It is often claimed that WFA aggregate has higher bulk density which consequently increases the density of fired brick and the corrosion resistance which could enhance the overall performance. However these perceptions should be investigated by an extensive evaluation.
5. Tabular Alumina Applications
- 1. Steel industry
- 2. Foundry industry
- 3. Petrochemical industry
- 4. Ceramic industry
- 5. Incineration industry
- 6. Electrical insulators
- 7. Kiln furniture
6. Tabular Alumina Particle sizes Available
Standard sizes: ½” - ¼”, ¼” -8, 3-6, 6-10, 6-14, 8-14, 14-28, 28-48, -14, -28, -48, -100, -325 mesh
5-10, 2-5, 3-6, 2-3, 1-3, 1-2, 0.5-1, 0.2-0.6, 0-1, 0-0.5, 0-0.3, 0-0.2, 0-0.045 mm
Other sizes available per customer's requirement.
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