Rongsheng Refractories Group
The refractory ball is a mixture of granules and powders with yellow dextrin, clay powder and other additives, which are then shaped and fired.
Physico-chemical indicators of refractory balls
| Subject | Index | ||||
| Tall aluminum ball | Mullite ball | Sharik is on the trail | Sharik is on the trail | Contains zirconium ball | |
| Al2O3% | 60~65 | 65~75 | 75~85 | 88~90 | 65~80 |
| Fe2O3% | ≤1.5 | ≤1.2 | ≤1.0 | ≤1.0 | 2~8(ZrO2) |
| Bulk density, g/cm3 | 2.0~2.3 | 2.3~2.5 | 2.5~2.8 | 2.8~3.1 | 2.7~3.1 |
| Apparent porosity % | 20~22 | 20~22 | 18~22 | 18~20 | 20~22 |
| Voltage value, withstands normal temperatures, KN | ≥9 | ≥11 | ≥18 | ≥26 | ≥28 |
| Bulk weight, kg/m3 | 1400~1500 | 1400~1600 | 1500~1650 | 1650~1800 | 1700~1800 |
| Specific surface area, m2/m3 | 200~220 | ||||
| Thermal expansion coefficient × 10-6/℃ | 5.0 | 5.5 | 6.0 | 7.0 | 6.0 |
| Reference value of specific heat capacity×103J/(kg K) | 1.1 | 1.1 | 1.2 | 1.3 | 1.2 |
Characteristics of ball lightning heat storage devices
- Fireproof balls are resistant to high temperatures
- Good creep resistance
- Pressure resistance
- High heat storage efficiency
- Good heat resistance
- Lasting
Heat storage ball function
The function of refractory balls is to prevent burnout of the furnace lining. They play the role of a gas-liquid, supporting and protecting the catalyst in the furnace; They are most widely used in hot blast furnace regenerators.
Fireproof ball material and size
High-temperature fireballs come in different materials and diameters, such as high-aluminum refractory balls, corundum refractory balls, silicon refractory balls, magnesia-aluminum refractory balls, mullite refractory balls, etc. The size of refractory balls is divided into diameters: 40, 50, 60.
Area of application of heat storage balls
Refractory balls are suitable for regenerative heating furnaces in the steel industry, regenerative ladle roasters, air separation equipment regenerators, regenerative chamber melting furnaces in non-ferrous metallurgy, etc..
Packaging and shipping
Fireproof balls are packed in tons of bags, and the delivery time is 7-12 days. Delivery time depends on the material and quantity of the product ordered. If you need more details about fireproof balls, you can contact us.
