Characteristics of aluminum-magnesium refractory castables

The aluminum-magnesium refractory castable is composed of fused magnesia, sintered magnesia, fused or sintered magnesia-alumina spinel, fused corundum, alumina powder, high aluminum powder, etc., and the binder is water glass and silicon oxide. And alumina ultrafine powder, calcium aluminate cement, phosphate and so on.

The aluminum-magnesium refractory castable has thermal shock resistance due to the presence of aluminum-magnesium spinel or the formation of magnesium-aluminum spinel during heating, which buffers the thermal stress inside the material, and is also resistant to thermal shock. There is a large amount of aluminum-magnesium spinel in the material, so it has a strong inhibition of osmosis.