... below, DescriptionCeramic Foundry sand is made from fine bauxite, by re-fused and blown to ball type. With advantage ... , it is a new type casting material for precision casting, coated sand and self hardening sand etc. Using: Manufacture high ... of iron and steel foundries, Lost-foam, Precoated sand;, Sodium silicon sand , Resin sand, Precision casting etc. Advantages:Spherical grain, low thermal ...