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Product description of high alumina refractory ball
The high aluminum fire resistant ball, also known as the spherical heat storage body, is characterized by low linear shrinkage rate of re firing, high softening temperature under high temperature load, corrosion resistance, high strength, large heat storage capacity, good thermal shock stability, good thermal conductivity, small thermal expansion coefficient, etc. It is a kind of refractory with good performance.
Features of high alumina refractory ball
High aluminum fire resistant ball has the characteristics of high mechanical strength, long service life, good chemical stability and high temperature resistance. It is characterized by low linear shrinkage, high softening temperature under high temperature load, corrosion resistance, high strength, large heat storage, good thermal shock stability, good thermal conductivity, small thermal expansion coefficient, etc.
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 |