CERAMIC FILTER, METHOD FOR MANUFACTURING AND UTILIZING THIS FILTER

摘要

A ceramic filter having a porous structure with open alveoli, based on aluminum oxide or other highly refractory substances, particularly with a high content of alumina, is used to filter, respectively to purify molten metals of which the casting temperature is higher than 1000C, particularly molten pig iron, during the casting in sand molds or chills. The flow speed through the filter is 200-5000 cm<3> of molten material per cm<2> of surface area of the filter per minute. The manufacturing of the ceramic filter usable as a disposable article is effected by means of a monoaluminum phosphate binder.