Insulation Materials

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.

Description

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.

Chemistry

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

Properties

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

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