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Sintered Tabular Alumina: Premium-Grade Corundum Solution
Engineered for Extreme Thermal Environments
sintered tabular alumina is a high-purity sintered α-alumina material characterized by its excellent thermal shock resistance, low porosity, and high refractoriness. It is produced by sintering calcined alumina at ultra-high temperatures without additives, resulting in a well-developed tabular (plate-like) crystal structure.
High bulk density and mechanical strength
Excellent thermal shock and wear resistance
Low porosity, high chemical stability
Outstanding performance in high-temperature environments
Sintered Tabular alumina serves as a premium aggregate in the production of shaped refractory bricks and unshaped monolithic materials such as castables and plastics. It is widely used in the following critical high-temperature areas:
― Steel industry: ladle working linings, slide gate plates, tundish nozzles, purging plugs
― Non-ferrous metallurgy: electrolytic cell linings, anode furnace linings, copper launder systems
― Glass industry: regenerator checkers, burner blocks, superstructure bricks
― Cement and ceramic kilns: rotary kiln sintering zones, preheater linings
― Petrochemical industry: reformer linings, gasifier castables, burner zones
― Foundry applications: investment casting molds, refractory coatings, ladle castables
Particle Type | Size Range | Equivalent Mesh | Application |
Coarse Grades | 5 – 1 mm | 4 – 18 mesh | For castables, ramming mixes |
Intermediate | 1 – 100 μm | 18 – 150 mesh | Shaped products |
Fine Powders | 100 – 45 μm (D₅₀ adjustable) | 150 – 325 mesh | High-reactivity mixes, castables |
Custom particle sizes available upon request. | |||
Standard packaging: 25kg bags or 1MT jumbo bags.
With or without pallet, moisture-proof inner lining.
Custom packaging is available upon request.
ISO 9001:2015 , ISO 45001:2018, ISO 14001:2015 certified production
Batch traceability system
"Precisely engineered microstructures deliver 23% longer service life in steel ladle working linings versus conventional tabular alumina."
― Verified User Report, 2024
Item | Unit | Grain | -0.1mm | -20㎛ |
Al2O3 | % | ≥ 99.5 | ≥ 99.4 | ≥ 99.3 |
Na2O | % | ≤ 0.40 | ≤ 0.40 | ≤ 0.40 |
SiO2 | % | ≤ 0.08 | ≤ 0.10 | ≤ 0.10 |
Fe2O3 | % | ≤ 0.06 | ≤ 0.08 | ≤ 0.08 |
Magnetic Fe | % | ≤ 0.02 | ≤ 0.02 | ≤ 0.02 |
Bulk Density | g/cm3 | 3.50 | ||
Apparent Porosity | % | 5.00 | ||
Water Absorption | % | 1.50 |
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