High Quality Ceramsite Core Sand Facing Sand

Our firm is leading name of the market for exporting and manufacturing of High Quality Ceramsite Core Sand Facing Sand to our patrons. Durant's ceramsite is well regarded a revolution for new foundry sand. It uses the calcined bauxite as the raw material,to be remelted and blown into solid bead by temperature spray.It is widely used as core sand and facing sand. The Durant's ceramsite has the following advantages: Round solid ball shape, saving binder addition; High refractoriness and service temperature Good air permeability and excellent dispersibility Lower thermal expansion rate and thermal conductivity Lower bulk density, lower true specific gravity and lower specific surface area Standard particle sizes Easily reclaimed and lower breakage rate during dry crushing Single application, no need mix with other foundry sands To reduce pollution and protect environment Chemical&physical properties Al2O3 (%) 70~80 SiO2 (%) 8~12 Fe2O3 (%) a 5 Refractoriness 1800A C Thermal expansion 0.15 (at 100 deg C) Thermal conductivity (w/m.k) 0.196 Specific heat (J/kg). 873