Andalusite in heating into the process of mullite, can form good mullite network structure, the volume expansion of about 4%, is a kind of irreversible crystal transformation, has higher fireproof performance after conversion, refractoriness of more than 1800 ℃。
Andalusite runner brick will make full use of the characteristics of the andalusite, thus the product has good resistance to thermal shocks, thermal shock resistance,refractoriness under load is high, and slag resistance is strong, and have high chemical stability.
Andalusite runner brick in foundry industry is gradually replacing the traditional clay runner brick and high aluminum runner brick, use effect is very obvious.
