Tabular Alumina
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Products Description
What is tabular alumina ?
Tabular alumina is a sintered alpha-alumina material produced by heating high-purity alumina powder at temperatures above 1900°C without any sintering aids.
It has a fully crystallized structure, low porosity, and excellent thermal shock resistance, making it ideal for high-temperature applications.
Unlike fused alumina, tabular alumina offers high refractoriness, superior corrosion resistance, and stable performance even under aggressive environments such as steel, glass, and cement kilns.
Technical Properties
|
Properties
|
Tabular Alumina |
||
|
JTA Aggregate |
JTA Fine |
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|
(%)Chemical Analysis
|
Al2O3 |
99.5 |
99.5 |
|
SiO2 |
0.09 |
0.15 |
|
|
Na2O |
0.40 |
0.40 |
|
|
Fe(magnetic) |
0.02 |
0.02 |
|
|
Physical Properties
|
Bulk Density(g/cm3) |
3.5 |
/ |
|
Apparent Porosity |
5.0 |
/ |
|
|
Water Absorption |
1.5 |
/ |
|
|
Particle Size |
3-6mm, 1-3mm, 0-1mm, 325mesh, 200mesh |
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Products Production Process
1. Raw material preparation: High-purity alumina powder is selected as the raw material.
2. Molding: The alumina powder is pressed and molded to form a blank of a certain shape.
3. High-temperature sintering: The formed blank is sintered in a high-temperature environment above 1800°C to densify it and form tabular corundum
4. Cooling and processing: The sintered tabular corundum blank is cooled and then further processed as needed, such as cutting, grinding, etc.
Applications of Tabular Alumina
Tabular alumina is widely used as a raw material in advanced refractory and ceramic products such as:
High-alumina castables and low cement castables
Refractory preforms and alumina crucibles
Ceramic rollers and kiln furniture
Wear-resistant and corrosion-resistant linings
Sliding gate plates and ladle nozzles
Its high thermal conductivity and mechanical strength make it a preferred choice for industries requiring reliability and consistency at high temperatures.
Advantages of Choosing Topower Refractory
High Purity Source – Produced from top-grade calcined alumina with consistent quality.
Strict Quality Control – Every batch tested for Na₂O, bulk density, and grain distribution.
Flexible Packaging – 25 kg bags or 1 MT jumbo bags on export pallets.
Fast Global Delivery – Shipping from Qingdao, Shanghai, or Tianjin within 10–15 days.
Documentation Ready – COA, MSDS, and test reports available upon request.
Typical Industries Served
| Industry | Application Example |
|---|---|
| Steel Industry | Tundish and ladle castables, sliding gate plates |
| Cement Plants | Kiln burner and outlet zones |
| Glass Industry | Melting tank and regenerator refractory linings |
| Ceramic Industry | Rollers, saggers, kiln shelves |
Packaging & Logistics
Packing: 25 kg multi-layer paper bags / 1,000 kg jumbo bags
Loading: 20–22 MT per 20' GP container
Frequently Asked Questions (FAQ)
Q1: What is the difference between tabular alumina and fused alumina?
A1: Tabular alumina is sintered without additives, giving it better thermal shock resistance and purity, while fused alumina has higher density but may contain glassy phases.
Q2: What sizes are available?
A2: Standard grain sizes include 0–1 mm, 1–3 mm, 3–6 mm, and 6–10 mm. Custom sizes are available upon request.
Q3: Can Topower Refractory provide small trial quantities?
A3: Yes, small sample orders (≤100 kg) are available for testing or R&D use.
Q4: How can I get a quote?
A4: Click "Get a Free Quote" or send your detailed requirements to inquiry@topower.tech We respond within 24 hours.
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Looking for a Reliable Tabular Alumina Supplier?
Contact Topower Refractory today for a quick quotation, technical data sheet, and bulk pricing.
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