Why are silica refractories suited for containing acidic slags?

Silica refractories are particularly well-suited for containing acidic slags due to their chemical composition, which consists primarily of silica and quartzites with very low levels of alumina and alkali impurities.1

In industrial applications, refractory materials are selected based on their chemical compatibility with the substances they contain. Because these materials are acidic in nature, they exhibit high stability when in contact with acidic slags, preventing the chemical degradation that would occur if they were exposed to incompatible basic materials. In addition to this chemical resistance, silica refractories provide excellent load-bearing capacity at high temperatures and are highly resistant to abrasion.12