High Alumina Refractory Balls are made of industrial alumina and refractory kaolin as the main raw materials, which are made by scientific formula, forming and hightemperature calcination.
Refractory alumina ball is divided into ordinary refractory ball and high aluminum resistance ball. Refractory porcelain ball high temperature resistance to high temperature can reach 1900 degrees, high mechanical strength and long-term use.
| Item | High alumina | Low creep | Mullite | Corundum |
|---|---|---|---|---|
| Size(mm) | 40-80 | 40-80 | 40-80 | 40-80 |
| AL2O3(%) | 65 | 70 | 75 | 95 |
| Refractoriness under load(°C) | 1450 | 1460 | 1530 | 1650 |
| Apparent Porosity(%) | 25 | 23 | 22 | 18 |
| Bulk Density(g/cm3) | 2.3 | 2.4 | 2.5 | 3.1 |
| Cold crushing strength(Mpa) | 13 | 14 | 32 | 36 |
| Thermal shock resistance(1100°Cwater cooling) cycle ≥ | 15 | 10 | 20 | 7 |
| Refractoriness(°C) | 1710 | 1750 | 1800 | 1800 |
1. High refractoriness, can withstand temperatures up to 1900 degrees Celsius; 2. Good thermal stability and thermal shock resistance; 3. Strong corrosion resistance; 4. High mechanical strength and long service life.
High-alumina refractory balls have a wide range of applications. In the metallurgical industry, they are used in blast furnaces and ladles to resist high temperatures. In the ceramics industry, they are applied in kilns to improve thermal efficiency. In the chemical industry, they are utilized in reactors and furnaces for their corrosion resistance. They are also used in glass furnaces and power plants to enhance the performance and service life of equipment.