V-1100 boards are not attacked by molten aluminium and are highly resistant to cryolite penetration and fluorides. Therefore V-1100 is ideal as back-up insulation in aluminium electrolysis cells, where it can be applied alone or as combi-boards (V-1100 glued on calcium silicate boards) for easy installation. V-1100 can also be used as hot- face insulation for covering electrolysis cells during start-up. Additionally, V-1100 can be applied in the secondary aluminium industry, for example as back-up insulation of the walls in holding furnaces, and in launders as back-up insulation and as top lid.
Product Brief Description;
V-1100 boards are not attacked by molten aluminium and are highly resistant to cryolite penetration and fluorides. Therefore V-1100 is ideal as back-up insulation in aluminium electrolysis cells, where it can be applied alone or as combi-boards (V-1100 glued on calcium silicate boards) for easy installation. V-1100 can also be used as hot- face insulation for covering electrolysis cells during start-up. Additionally, V-1100 can be applied in the secondary aluminium industry, for example as back-up insulation of the walls in holding furnaces, and in launders as back-up insulation and as top lid.
Parameter Specification:
Parameter |
Specification |
Material |
Vermiculite |
Length × width |
1000 x 305 mm |
Thickness |
25 – 130 mm |
Maximum service temperature |
1150℃ |
Bulk density |
750 kg/m³ |
Compressive strength |
5.0 Mpa |
Bending Strength |
2.5 Mpa |
stomatal percentage |
72 % |
Linear reheat shrinkage |
1.0% |
Thermal conductivity | |
Mean temp.:@ 200℃ |
0.14 W/(m*K) |
Mean temp.:@ 400℃ |
0.16 W/(m*K) |
Mean temp.:@ 600℃ |
0.18 W/(m*K) |
Mean temp.:@ 800℃ |
0.20 W/(m*K) |
Chemical Analysis | |
SiO2 |
46% |
Al2O3 |
13% |
Fe2O3 |
4-6% |
TiO2 |
1-2% |
MgO |
20% |
CaO |
1.9% |
K2O |
8% |
Na2O |
1.5% |
Key Features:
Energy Saving
High strength with low thermal conductivity
Maximum Service Temperature: 1100℃
Highly resistant to cryolite penetrations and fluorides
Not wetted by molten aluminium
Applications:
Electrolysis cells
Carbon Baking furnaces