Lining iron and steel furnaces is critical in order to extend the life of the furnace and to protect the purity of the metals being heat treated. Therefore, choosing the best material to meet these needs is crucial. For many years, the first-choice material for the industry has been refractory ceramic fiber (RCF), also known as aluminosilicate wool (ASW), which can withstand the extreme temperatures within the furnace and features strong resistance to pollutants.
However, RCF comes with environmental, health and safety (EHS) concerns. After numerous studies, RCF was classified as a category 1b carcinogen in Europe and is considered a substance of very high concern (SVHC) under REACH (Registration, Evaluation, Authorization and Restriction of Chemicals).