Refractory Ball
Item | High aluminum material | Mullite material | Corundum mullite material | Corundum material | Zirconium material | Chrome material |
AL 2 O 3 (%) ≥ | 60-65 | 65-75 | 75-85 | 90-99 | 65-80 | 65 |
Fe 2 O 3 ≤ | 1.5 | 1.2 | 1.0 | 1.0 | Zr 2 (%) ≥ 2-8 | Cr 2 (%) ≥ 3-10 |
Apparent porosity % | 20-22 | 20-22 | 18-22 | 18-20 | 20-22 | 20-22 |
Volume density (g/cm 3 ) | 2.0-2.3 | 2.3-2.5 | 2.5-2.8 | 2.8-3.2 | 2.7-3.1 | 2.6-3.0 |
Volume weight (Kg/m 3 ) | 1400~1500 | 1400~1600 | 1500~1650 | 1650~1800 | 1700~1800 | 1500~1650 |
Specific surface area(m 2 /m 3 ) | 200~220 | |||||
Coefficient of thermal expansion(x 10-6/ ºC ) ≥ | 5.0 | 5.5 | 6 | 7 | 6 | 8 |
Reference value of specific heat capacity (x 103/Kg K) | 1.1 | 1.1 | 1.2 | 1.3 | 1.2 | 1.1 |
1100 ºC Water-cooling (times) ≥ | 30-20 | 20-15 | 20-15 | 15-10 | 10-8 | 10 |
Applicable temperature ( ºC ) ≤ | 1400 | 1450 | 1550 | 1650 | 1350-1500 | 1400-1600 |
Note:
According to the actual situation and customer requirements,
our company can make appropriate adjustments to the data in the table.