Insulating the tundish

Insulating with high-density calcium silicate boards LCA 845

The permanent insulating lining on the tundish is a basic prerequisite for preventing heat loss during

• Drying
• Heating (hot tundish practice)
• Pouring
• The casting process and also to prevent the tundish vessel from overheating

Experience has shown that the insulating calcium aluminate fibre mats, which are commonly used, already begin to breakdown during the bricklaying or casting of the permanent lining, as well as when they are drenched with mortar or poured concrete. As a result, the lining loses its insulating properties even before its initial use and also destabilises the ladle lining. High-strength and high-density calcium silicate boards are an excellent alternative to conventional fibre mats. This is based on the following attributes:

• extremely high tensile strength (26 MPa) and the
• excellent insulating effect ( ג= 0,22 W/mK at 100°C)
• Easy to work with and install
• they do not lose their insulating properties while the ladle is transferred to the tundish

LCA 845 Insulating Boards can be purchased with dimensions measuring 1250 mm x 750 mm and thicknesses ranging from 10 to 30 mm. Conventional tools are all you need to work with the boards, for example to make holes for anchors or cut the boards down to size.

LCA 845 Insulating Boards are not only suitable for insulating steel casting ladles – they are also designed for use with pig iron ladles, torpedo ladles, electric arc furnaces and tundish vessels.