Penetrable ceramic materials based on clays with a controllable porous structure

Abstract

The effect of isometric and fiber organic and inorganic additives such as chamotte, carbon black, hydrophilic graphite, glass fiber, mullite-siliceous fiber, carboxymethyl cellulose, and cellulose introduced jointly and separately on the penetrability, maximum pore size, size distribution of penetrable pores, and mechanical strength of ceramic materials based on low-melting clay is investigated. It is shown that the pore structure can be controlled by simultaneous introduction of additives of different natures. The materials obtained have a maximum pore size of 1.2–2.9 µm, a gas penetrability of 0.150 µm2, and satisfactory mechanical strength. The materials can be used as ceramic filters.