| Customization: | Available |
|---|---|
| Feature: | Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Light Weight, Low Thermal Conductivity, Long Time Materials |
| Refractoriness (℃): | 1770< Refractoriness< 2000 |
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The alumina ball is also called the high aluminum accumulation of heat ball.High alumina refractory ball is based on bauxite as the mainly raw refractory material.Adding powder and additives and anchoring agent.After proportioning, molding and high sintering to make it.The production engineering of high alumina refractory ball is similar to that of high alumina refractory brick.It should be based on the properties of raw materials,high alumina refractory ball requires production conditions and other factors to determine.
| 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 |
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