Porous ceramic shapes, compositions for the preparation thereof, and method for producing same

Abstract From the Canadian patent

Disclosed herein is a foamable self-setting, ceramic composition which can be poured into molds or injection-molded or extruded to achieve desired shapes and thereafter optionally fired to produce shaped porous, ceramic articles useful as filter elements insulation, kiln furniture, molds, furnace linings building blocks, or other like articles the composition containing agents, capable of developing an alkali metal aluminosilicate hydrogel and capable of generating gas to produce porosity within the hydrogel bound molded shape.