摘要 |
<p>A moulding composition for manufacturing an open-celled foam product from essentially inorganic constituents is described. In addition to the components known per se, the moulding composition contains … … - a stone-forming solid, … - a hardener, … - a foam-forming additive, … an additive with at least partially alkali-soluble protein products to obtain the open-celled character. …<??>The stone-forming component used is especially a reactive solid from the group comprising … … I a finely dispersed oxide mixture containing amorphous silica and alumina, … II glassy amorphous electrostatic precipitator ash, … III ground calcined bauxite, … IV electrostatic precipitator ash from lignite-fired power stations, … V undissolved amorphous SiO2, especially consisting of amorphous, disperse-pulverulent dehydrated or water-containing silica or from high-temperature processes (silica fume), … VI metakaolin and … VII cement. … …<??>The hardener is especially an alkali metal silicate solution with 1.2-2.5 mol of SiO2 per mol of K2O and/or Na2O.</p> |