DE2613023

• Main Authors: YARWOOD, JOHN C., MADISON, CONN., US, PRYOR, MICHAEL J., WOODBRIDGE, NEW HAVEN, CONN., US, PREUSS, ROBERT K., MIDDLETOWN, CONN., US, DORE, JAMES E., MILFORD, NEW HAVEN, US, GRAY, THOMAS J., HALIFAX, NEU SCHOTTLAND, CA
• Format: Patent
• Language: English
• Published: 18.11.1982
• Subjects: ARTIFICIAL STONE; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; FERROUS OR NON-FERROUS ALLOYS; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POWDER METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; REFRACTORIES; SEPARATION; SLAG; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; TREATMENT OF NATURAL STONE

The present invention provides a highly efficient ceramic roam material for use in filtering molten metal, especially molten aluminum. The ceramic roam material of the present invention is characterized by having an open cell structure with a plurality of interconnected voids surrounded by a web of said ceramic material. The filter of the present invention is further characterized by a combination of critical properties, as air permeability, porosity or void fraction and thickness.