High Alumina Insulating Blocks for Industrial Furnace - China Suppliers & Factory Quality Refractory Materials
Feature & Advantage
Typical Application
"Vibration Cast Fireclay Block for Glass Furnace" is commonly used for insulation in the bottom and sidewalls of glass furnaces. These fireclay bricks not only effectively insulate, preventing the outward spread of heat and maintaining a stable high-temperature environment inside the glass furnace, but also possess high strength characteristics. Their unique vibration casting process gives these bricks uniform density and excellent refractory performance, enabling them to withstand the high temperatures and impacts generated during glass furnace operations, ensuring stability and reliability during long-term operation.
Typical Indexes
| Items | Unit | FLG-1.2 | FLG-1.0 | FLG-0.8 | FLG-0.7 | FLG-0.6 |
| Al2O3 | % | ≥ 48 | ≥ 48 | ≥ 48 | ≥ 48 | ≥ 48 |
| Fe2O3 | % | ≤ 2.0 | ≤ 2.0 | ≤ 2.0 | ≤ 2.0 | ≤ 2.0 |
| Bulk Density | g/cm³ | 1.2-1.3 | 1.0 | 0.8 | 0.7 | 0.6 |
| Cold Crushing Strength | MPa | 15 | 4 | 3 | 2.5 | 2 |
| Reheating Linear Change no more than 2% | °C | 1400 | 1400 | 1400 | 1350 | 1350 |
| Thermal Conductivity @350 ± 10°C | W/m·K | 0.55 | 0.5 | 0.35 | 0.35 | 0.3 |
Frequently Asked Questions
What are the primary advantages of using high alumina insulating blocks?
High alumina insulating blocks offer excellent thermal insulation, good mechanical strength, lightweight structure for easy installation, high dimensional stability under extreme heat, and superior energy efficiency.
Where are vibration cast fireclay blocks typically applied?
They are commonly used for thermal insulation in the bottom and sidewalls of glass furnaces to maintain a stable, high-temperature environment and prevent heat loss.
What is the typical Al2O3 content in these insulating blocks?
Across all typical models (FLG-1.2 to FLG-0.6), the Al2O3 content is consistently greater than or equal to 48%.
How does the bulk density vary among the different models?
The bulk density ranges from 0.6 g/cm³ for the lightweight FLG-0.6 model up to 1.2-1.3 g/cm³ for the high-strength FLG-1.2 model.
What is the thermal conductivity of these blocks?
Tested at 350 ± 10°C, the thermal conductivity ranges from 0.3 W/m·K (FLG-0.6) to 0.55 W/m·K (FLG-1.2), ensuring excellent heat retention capabilities.