| abstract |
Self-hardening, foaming ceramic composition which can be cast in molds or injection molded or also extruded to obtain desired shapes and then optionally fired to produce articles in porous, shaped ceramic, useful as a filter element, as insulation, accessory for ovens, such as molds, oven liners, building blocks or the like, the composition containing agents capable of developing an alkali metal aluminosilicate hydrogel and capable of generating a gas creating porosity in the molded form bonded by the 'hydrogel. |