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Product introduction of high alumina refractory ball
The high alumina refractory ball is made of industrial alumina and refractory kaolin as the main raw materials through scientific formulation, high temperature molding and calcination. The production process of high alumina refractory ball is similar to that of refractory brick. It shall be determined according to the characteristics of raw materials, requirements for high aluminum fire resistant balls, production conditions and other factors.
Features of high alumina refractory ball
- High mechanical strength and long service life
- Good chemical stability, no chemical reaction with materials
- Good high temperature resistance, and the maximum heat resistance temperature of refractory ceramic ball can reach 1900 ℃
Applications of high alumina refractory ball
High aluminum refractory ball has the characteristics of high mechanical strength, long service life, good chemical stability, high temperature resistance, etc. Hot blast stove, heating furnace and other equipment for urea and steel industry.
Parameters of high alumina refractory ball
| 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 |