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
Огнеупорные шарики подходят для печей регенеративного нагрева в сталелитейной промышленности, регенеративных ковшовых жаровен, регенераторов оборудования для разделения воздуха, регенеративных камерных плавильных печей в цветной металлургии и т.д.
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.
