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Foam ceramic filter is also suitable for copper, bronze, brass and other copper alloy, to reduce copper turbulence and rectification purification molten copper. Particularly valuable is the filtered copper castings in marine marine turbines, chemical parts and other demanding or harsh environment life significantly extended, and for the surface polishing requirements of the cast copper pieces also have good results. Bubble ceramic filters also play an important role in the traditional copper industry and the electrical and electronic copper industry and the continuous casting and rolling process, etc. As the copper and alloys, including zinc alloys, have a greater specific gravity, Thermal shock, so in the copper process, the use of silicon carbide foam ceramic filter is generally the size of the strict rules.