// SPEC · Refractory Raw Materials
Sintered Mullite Aggregate Al2O3 72% 3-5mm
Sintered Mullite Aggregate Al2O3 72% in 3-5mm coarse grade delivers structural backbone, high RUL, and creep resistance for heavy-duty refractory applications in petrochemical, steel, and cement plants.
// Key Features
- Coarse 3-5mm grading for structural aggregate skeleton in heavy refractory linings
- High refractoriness under load (RUL) for sustained structural integrity
- Superior creep resistance at continuous operating temperatures above 1500°C
- Low porosity aggregate minimizing gas permeability in dense monolithic systems
// Technical Specifications
| SiO2 (%) | ≤26 |
| Al2O3 (%) | ≥72 |
| Apparent Porosity (%) | ≤12 |
| Available Grain Sizes | 3–5 mm |
| Bulk Density (g/cm³) | ≥2.60 |
// Applications
Blast furnace hot blast stove dome and combustion chamber liningPetrochemical ethylene cracking furnace radiant section floorCement rotary kiln burning zone monolithic backup aggregateElectric arc furnace hearth and sidewall castable liningCeramic tunnel kiln car platform and support refractory
// Quick Specs
Max Temperature1700°C
Thermal Conductivity2.5 W/(m·K) at 1000°C
Density2.65 g/cm³
StandardGB/T 26568
// Get Pricing
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