... Sands 2,Low thermal expansion rate 3,high refractoriness Ceramisite sand is made from high quality bauxite, by re-fused ... new type casting material for precision casting, coated sand and self hardening sand etc.Size:10-300meshMain Chemical Composition:Al2O3≥75% ... 13% (10 min at 1000 C )Application:Waterglass bonded sand, resin bonded sand, precision casting, Expendable Pattern Casting (EPC), Copper and ...