ceramisite sand 1,replacement of Quartz Sands and Silica Sands 2,Low thermal expansion ... With advantage of fine surface smooth finish and air permeability, it is a new type casting material for precision casting, coated sand ... C )Application:Waterglass bonded sand, resin bonded sand, precision casting, Expendable Pattern Casting (EPC), Copper and Aluminium articles casting treatment. Ceramisite sand