Mullite Lightweight Castable

Raw materials for mullite lightweight castables

The lightweight mullite castable is made of high-quality porous mullite aggregate, pure calcium aluminate cement, mullite micropowder, alumina micropowder, and silica micropowder and dispersant are added as composite binders to reduce the need for castables. Water volume at the same time, improve fluidity.

Characteristics of mullite lightweight castables

Mullite lightweight castable has many advantages

1.It is suitable for the lining of the thermal insulation layer of various thermal kiln equipment, and has the effect of thermal insulation and energy saving. 

2.It has high strength, and can effectively reduce the weight of the construction body and enhance the thermal insulation effect when used in the furnace roof, furnace door and other parts. 

3.Low thermal conductivity and good thermal insulation effect, which can effectively save fuel and reduce heat loss. 

4.The construction is simple and can be used for integral casting or large prefabricated parts.

Application effect of mullite lightweight castable

Mullite lightweight castables are used in heating furnaces and are mainly used for integral lining of regenerators. The working layer, which is used in a high temperature environment of 1350 °C for a long time, needs to withstand the change of temperature in the kiln, as well as the erosion and wear of high temperature gas.