Sillimanite Bricks are high-quality high-alumina refractory products manufactured from natural sillimanite minerals. When heated, sillimanite transforms into mullite and free silica, giving the bricks excellent high-temperature performance, superior thermal shock resistance, and strong structural strength.
Xintai Refractory produces premium sillimanite bricks with advanced manufacturing technology, ensuring stable quality, competitive pricing, and customized dimensions to meet specific project needs.
Technical Specifications
| Item | XS-65 | XS-60 |
|---|---|---|
| Al₂O₃ (%) | ≥65 | ≥60 |
| SiO₂ (%) | ≤32 | ≤37 |
| Fe₂O₃ (%) | ≤0.5 | ≤1 |
| Bulk Density (g/cm³) | ≥2.5 | ≥2.3 |
| Apparent Porosity (%) | ≤18 | ≤19 |
| Cold Crushing Strength (MPa) | ≥80 | ≥80 |
| Refractoriness Under Load (0.2MPa) (°C) | ≥1650 | ≥1600 |
| Thermal Shock Resistance (100 °C Water) | ≥15–20 times | ≥15–20 times |
Key Features
High Refractoriness – Withstand temperatures up to 1770–1830 °C and maintain stability under heavy loads.
Excellent Thermal Shock Resistance – With minimal permanent linear change (-0.1% to 0.1%), ideal for rapid temperature variations.
Strong Mechanical Strength – High Cold Crushing Strength (45–60 MPa) ensures superior wear resistance.
Chemical Stability – Excellent resistance to acid, alkali, and corrosive slag attack.
Energy-Saving Performance – Low thermal conductivity helps reduce heat loss and improve furnace efficiency.
Customizable Sizes – Available in various dimensions and shapes to fit different furnace structures.
Typical Applications
Furnace Linings – Glass melting furnaces, copper smelting furnaces, zinc dust furnaces, blast furnaces, hot blast stoves, lime kilns, ceramic kilns, and metallurgical furnaces.
Coke Ovens & Oil Refining Furnaces – High-performance lining materials for prolonged service life.
Special Components – Electrolytic cells, wear-resistant tubes, impellers, pump chambers, cyclones, feeders, and nozzles.
Production Details
Xintai Refractory uses selected natural sillimanite minerals, precision grinding, high-pressure forming, and high-temperature firing to ensure stable physical and chemical properties. Each batch undergoes strict quality inspection for dimensional accuracy, mechanical strength, and thermal performance.
Packing and Shipping Details
Packing: Wooden pallets with plastic film wrapping or fumigation-free wooden boxes for export.
Shipping: Sea freight or land transportation. Customized packing available to ensure safe delivery.
Lead Time: 15–25 days depending on order quantity and customization requirements.
Frequently Asked Questions (FAQ)
Q1: What is the maximum service temperature of Sillimanite Bricks?
They can withstand temperatures up to 1770–1830 °C, with a refractoriness under load of 1600–1650 °C.
Q2: Can Xintai provide custom sizes and shapes?
Yes. We offer tailor-made solutions according to furnace design and project specifications.
Q3. Do you provide free samples?
Free samples are available. Customers only need to cover shipping costs.
Q4: What industries commonly use Sillimanite Bricks?
Glass, steel, non-ferrous metals, ceramics, lime, coke, and chemical industries.
Q5: How long is the service life?
It varies based on furnace type, operating temperature, and working atmosphere but generally offers superior service life compared to standard high-alumina bricks.
