- T: +44 (0) 1246 811163
Capital Refractories supply Moist Felt, Foil Wrapped Insulation Boards and bricks for use between ladle shells and the cast lining to control heat loss. They are also used in other applications such as auto-pour units.
Moist Felt is supplied in 0.5 m widths and 1 m lengths and 5 mm thicknesses.
Foil-wrapped Insulation Boards are supplied in a wide range of sizes with thicknesses of 3, 5, 7 and 10 mm.
Capital also supplies a range of insulating castables installed by vibro-casting or gunning.
| Product Name | Description |
| Supra Brick | General purpose insulating bricks are used under Firebrick Hearths or as backup insulation lining. |
| Calcium Silicate Board | Non-combustable and asbestos free insulation material used in a wide variety of applications for backup insulation. |
| Microporous Board | Extremely low thermal conductivity board. |
| Superflex | Flexible microporous thermal insulation materials with extremely low thermal conductivity. Widely used to back curved surfaces. |
| Product Name | AI2O3 | SiO2 | Fe2O3 | CaO | Other |
| Supra Brick | 9 | 77 | 7 | 1 | - |
| Calcium Silicate Board | <1 | 47 | <1 | 42 | - |
| Microporous Board | - | 80 | - | - | SiC 15 |
| Superflex | 10 | 60 | - | - | ZrO2 25 |
| Product Name | Maximum Service Temperature / °C | Bulk Density / g cm-3 | Thermal Conductivity / W m-1 K-1 | |
| 400 °C | 800 °C | |||
| Supra Brick | 950 | 0.75 | 0.2 | 0.2 |
| Calcium Silicate Board | 1000 | 0.23 | 0.1 | 0.1 |
| Microporous Board | 1000 | 0.23 | 0.02 | 0.04 |
| Superflex | 1000 | 0.35 | 0.02 | 0.04 |
