Refractory Brick
Refractory bricks in the aluminum industry are used to line high-temperature equipment such as smelters and melting furnaces. They must be able to withstand extreme heat and chemical erosion.
The refractory materials used in the aluminum industry mainly include fireclay bricks, insulating bricks, and alumina bricks.
Vermiculite Insulation Brick
The vermiculite insulation brick is characterised by its low density, superior thermal insulation, and robust strength.
These advantages ensure energy efficiency and environmental sustainability in high-temperature applications, this is specially evident in large-scale electrolytic tank installations.
Technical Specifications
Physical
Density: 0.43 - 0.48 g/cm3
Thermal
Thermal Expansion: -2% to +1% (900°C for 3h)
Thermal Conductivity:
0.115 W/(m · K) at 200°C
0.142 W/(m · K) at 600°C
0.155 W/(m · K) at 800°C
Mechanical
Compressive Strength (25°C ) : 1.3 MPa
Compressive Strength (600°C) : 1.2 MPa
Barrier Brick
The barrier is typically used for aluminum electrolysis cell linings, this means its impermeability is key in order to offer enhanced insulation and electrolyte penetration resistance.
Barrier bricks also provide improved pressure resistance, structural stability, and erosion resistance, ensuring production safety for large scale operations.
Technical Specifications
Physical
Standard Size: 152 x 152 x 19mm | 440 x 440 x 60/40mm
Density: 2.05g/cm3 | 2.0g/cm3
Porosity: 22% - 24%
Chemical Composition: Al2O>18% ; SiO2>65%
Thermal
Thermal Conductivity: 1.1W/(m · K) at 200°C
Thermal Expansion (1000°C ): <1%
Mechanical
Compressive Strength (25°C ) : 20 - 30MPa
Anti-electrolyte Penetration: Reaction corrosion area<7cm3 , Reaction depth <4mm