Tabular Alumina
Tabular alumina is a pure sintered alumina, thoroughly calcined without the addition of any additives such as MgO or B2O3. It boasts a coarse, well-developed α-Al2O3 crystal structure, with an Al2O3 content exceeding 99%. Characterized by a plate-like crystal structure and numerous closed pores, its purity, high thermal stability, and minimal reheating shrinkage contribute to its exceptional properties. After high-temperature treatment, it exhibits excellent thermal shock resistance and flexural strength.
Tabular alumina characteristics: high refractoriness; excellent corrosion resistance; superior erosion resistance; exceptional thermal shock resistance; high strength and good toughness; stable chemical properties.
Applications
Tabular alumina finds diverse applications, serving as a primary component in refractory materials like alumina-carbon, alumina-magnesia-carbon, magnesia-alumina-carbon, magnesia-spinel, and alumina-chrome refractory bricks. It is also utilized to enrich the alumina content in high-alumina shaped refractory materials. Its widespread use spans industries such as steelmaking, foundries, ceramics, and beyond, with extensive application throughout the entire iron and steel production process.
Available Size
| Fraction | 5-10mm, 8-5mm, 3-6mm, 3-5mm, 3-2mm, 1-3mm, 1-2mm, 0.5-1mm, 0.2-0.6mm, 0-0.5mm, 0-0.2mm, 14-28#, 28-48# |
| Fine Powder | 100#-0, 200#-0, 325#-0, 45μm-0, 0-0.045mm |
(other sizes are customizable)
Typical Chemical Analysis/Physical Properties
| Size | Chemical Index | Physical Index | |||||
| Al2O3% | SiO2% | Fe2O3% | Na2O% | Volume Density | Water Absorption | Apparent Porosity | |
| 0-1mm 1-3mm 3-5mm 5-8mm | 99.2min | 0.1max | 0.1max | 0.35max | 3.5g/cm3 | 1.5 | 5 max |
| 200#-0 320#-0 325# | 99min | 0.15max | 0.1max | 0.4max | 3.45g/cm3 | 2.0 | 6 max |
Production Flow
- Use 60# imported aluminum powder from Australia
- Employ a ceramic ball mill for the manufacturing process
- Produce tabular alumina balls
- Form tabular alumina ball cylinders
- Dry the tabular alumina balls
- Sintered tabular alumina ball by high temperature treatment
- Obtain sintered balls
- Proceed with sand making
Packaging
- 25kg small bag, filled by weight.
- Packaging in bulk bags.
- Combination of 25kg small bags and bulk bag packaging.
