Top quality Hollow Alumina Spherere Bricks manufacturers
Hollow Alumina Sphere Bricks 1,high temperature resistance 2.low thermal conductivity 3. good thermal insulation
Hollow Alumina Sphere Bricks
Scope of application
They are widely used in inner linings of various non-contacted melt high temperature kiln and thermal insulating layers of high temperature kilns.
Physical and Chemical Indexes of Hollow Alumina Sphere Bricks | |||||
| Name / Indexes/ Item | MLQ-1.5 | LQ-1.2 | LQ-1.5 | LQ-1.7 | |
Chemical composition | Al2O3 % ≥ | 84 | 98.5 | 98.5 | 98.5 |
| Fe2O3 % ≤ | 0.8 | 0.3 | 0.3 | 0.3 | |
| SiO2 % ≤ | 15 | 1.0 | 1.0 | 1.0 | |
Bulk density g/m3≤ | 1.5 | 1.2 | 1.5 | 1.7 | |
Compressive strength at normal temperature MPa≥ | 16 | 3 | 12 | 15 | |
| Porosity % ≥ | 58 | 62 | 60 | 58 | |
| Soften point at 0.1MPa KD°C≥ | 1650 | 1650 | 1700 | 1700 | |
| Fire resistant (°C)≥ | 1800 | 1800 | 1800 | 1800 | |
| Thermal conductivity Hot side 1000°CW/m.k≤ | 1.2 | 0.95 | 1.05 | 1.15 | |
Top quality Hollow Alumina Spherere Bricks manufacturers
