Product Description
Sintered Mullite is produced by high-temperature sintering of selected alumina-rich raw materials. It features a stable mullite crystal structure, low impurity content, high refractory temperature, and excellent resistance to thermal shock, chemical corrosion, and mechanical abrasion.
Thanks to its balanced expansion performance and high load-bearing capacity under high temperatures, sintered mullite has become one of the most preferred raw materials for manufacturing high-performance refractories and kiln linings.
Key Advantages
- Excellent thermal shock resistance
- High refractoriness and softening temperature under load
- Low creep rate at elevated temperatures
- Outstanding resistance to slag and alkali corrosion
- High mechanical strength and abrasion resistance
- Stable crystal phase and uniform grain structure
Typical Applications
- Refractory bricks and shaped products
- Castables and monolithic refractories
- Kiln furniture, burner blocks, checker bricks
- Steel ladle and tundish linings
- Petrochemical furnace refractories
- Cement rotary kilns
- Glass and ceramics industry
- Foundry coatings and molds
Technical Specifications
Chemical Composition (Wt.%)
| Grade | Al₂O₃ | TiO₂ | Fe₂O₃ | Na₂O + K₂O |
|---|---|---|---|---|
| M75 | 73–78 | ≤0.5 | ≤0.5 | ≤0.5 |
| M70-1 | 68–73 | ≤0.5 | ≤0.5 | ≤0.4 |
| M70-2 | 68–73 | ≤1.5 | ≤1.5 | ≤0.4 |
| M60-1 | 57–62 | ≤0.5 | ≤0.5 | ≤0.3 |
| M60-2 | 57–62 | ≤2.0 | ≤1.5 | ≤0.3 |
| M45-1 | 43–48 | ≤1.0 | ≤0.5 | ≤0.4 |
| M45-2 | 43–48 | ≤1.5 | ≤1.3 | ≤3.0 (Na₂O ≤0.3) |
Physical Properties
| Grade | Bulk Density (g/cm³) | Apparent Porosity (%) | Refractoriness (°C) |
|---|---|---|---|
| M75 | ≥2.90 | ≤3 | 1800 |
| M70-1 | ≥2.85 | ≤5 | 1800 |
| M70-2 | ≥2.75 | ≤5 | 1800 |
| M60-1 | ≥2.65 | ≤5 | 1800 |
| M60-2 | ≥2.65 | ≤5 | 1800 |
| M45-1 | ≥2.55 | ≤4 | 1760 |
| M45-2 | ≥2.50 | ≤4 | 1760 |
Available Particle Sizes
Particle size distribution can be customized according to application:
Sintered Mullite from Ze Xi Mineral is engineered for demanding high-temperature applications. With stable performance and low impurities, it delivers longer service life, reduced maintenance downtime, and improved operational efficiency in steel plants, cement plants, foundries, and petrochemical furnaces.
Compared with common refractory aggregates, our mullite provides stronger slag resistance, lower creep resistance, and better cost performance.
Fast delivery, strict quality control, and customized particle sizes are available.
📦 Packaging
25 kg plastic-lined woven bag | 50 kg plastic-lined woven bag
1.0 MT jumbo bag | 1.25 MT jumbo bag | 1.3 MT jumbo bag | 1.5 MT jumbo bag
(Custom packaging available on request)