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1.Product description of high alumina refractory bricks:
High alumina brick is an aluminosilicate based refractory material with alumina content greater than 48%. It is calcined from bauxite raw material or high Al2O3 material, with high thermal stability and refractoriness above 1770℃. It has good resistance to slag.
2.Applications of high alumina refractory bricks:
- Petrochemical process heater
- Heat treatment furnace
- Tunnel kiln
- Pallet car furnace
- Ceramics are fired in kilns
- Cement rotary kiln
- Glass melting tank
- The blast furnace
- Hot blast stove
- Furnace refractory heating surface
3.Parameters of high alumina refractory bricks:
| Item | Index | |||
| International code name | SK36 | SK37 | SK38 | SK40 |
| Chinese code name | LZ-55 | LZ-65 | LZ-75 | LZ-80 |
| Al2O3 min % | 55 | 65 | 75 | 80 |
| Fe2O3 max % | 2 | 2 | 2 | 2 |
| Refractoriness C min. | 1770 | 1790 | 1790 | 1790 |
| Refractoriness under Load C min. | 1470 | 1500 | 1520 | 1530 |
| Permanent Linear Change % | 1500 C×2h +0.1~-0.4 | 1500 C×2h +0.1~-0.4 | 1500 C×2h +0.1~-0.4 | 1500 C×2h +0.1~-0.4 |
| Apparent Porosity max. % | 22 | 23 | 23 | 21 |
| Cold Crushing Strength mim. | 44 | 49 | 54 | 65 |
Kerui Refractory produces a variety of refractory products with complete specifications, which can be customized to process various special-shaped bricks, and can be produced on demand to meet the operating conditions of various high-temperature kilns.