The alumina ceramic foam filter is suitable for the filtration and purification of aluminum and aluminum alloys. It is composed of alumina, silica, talc, and kaolin to form a ceramic powder, and then adds polyvinyl alcohol, silica sol, and water to prepare a slurry. The polyurethane foam is used as the carrier, impregnated with the […]
The porous ceramic filter medium has a primary porous structure imparted by the foam macrostructure, which is the exoskeleton of the polyurethane precursor, and is replicated by coating with slurry, followed by drying and firing. The primary pore size is usually 3 holes per linear inch (ppi) to 100 ppi, more preferably 20 ppi to […]
