Ceramic Foam

Ceramic foam filter has the advantages of high porosity, low loss of thermal shock, high mechanical strength at normal and high temperature, large specific surface, good chemical stability and excellent filtering functions of screen, filtering residuum collection and adsorption especially for tiny impurity of 1~10μm. The three-dimensional structure can improve the cast quality in large scale by changing the molten metal from turbulence flow to lamellar flow, removing the gass and smoothing the casting. Ceramic foam filter is not only applied for molten metal filtering in high temperature, but gas treatment in high temperature, carrier of catalyzer, solid heat exchange and advanced filling for chemical industry.
We has developed three kinds of ceramic foam filters: Alumina foam filter, Silicon carbide foam filter, Zirconia foam filter.
 
Characteristics

Items
Material	Alumina	Silicon Carbide	Zirconia
Colour	White	Grey-black	Yellow
Applied Temp.(ºC)	≤1200	≤1500	≤1700
Pore Size(PPi)	8~50	8~50	8~50
Porosity(%)	80~90	80~90	80~90
Bulk Density(g/cm3)	0.35~0.55	0.45~0.65	1.0~1.5
Compressive Strength(Mpa)	≥0.8	≥1.0	≥1.5
Application	Molten Aluminum and Alloy	Molten Cuprum, Iron and Alloy	Molten Stainless Steel, Alloy and other metal in precision molding

 
Alumina ceramic foam filter: White, for molten metal filtering under temperature of 1200 degree.
Silicon Carbide ceramic foam filter: Gray-black,for molten metal filtering under temperature of 1500 degree.
Zirconia ceramic foam filter: Yellow, for molten metal filtering under temperature of 1700 degree.