| 摘要 |
The invention relates to a method and to a device for the continuous production of an inorganic foamed material. So far, discontinuous methods have been exclusively used to produce molded bodies from molding compounds, comprising an inorganic, so-called agglomerating reactive component, as the curing agent an aqueous second component that induces a curing reaction of the agglomerating component in the alkaline range (geopolymerization), and a foaming agent. The aim is therefore to provide a method for the continuous production of a profile from an inorganic foamed material. The method according to the invention comprises the following steps: I. Mixing a reaction mixture that has a pasty to flowable nature, that contains an inorganic, agglomerating reactive component, as a curing agent an aqueous second component that induces a curing reaction of the agglomerating component in the alkaline range, and a foaming agent. II. Applying the mixture to a lower belt of a double belt conveyor which moves continuously and steadily in the direction of production. The double belt conveyor has a lower belt and an upper belt that moves in synchronicity with the lower belt. The lower belt of the double belt conveyor consists of a plurality of segments (4, 4', 4 ) whose cross-sections determine the lower and the two lateral sections of the profile from foamed material. The upper belt, in a section of the double belt conveyor, engages with the segments (4, 4', 4 ) of the lower belt in a sealing manner so that this section of the double belt conveyor defines a closed reaction chamber that is sealed on all sides. III. Heating the mixture by supplying energy via the upper and/or lower belt and/or by subjecting the mixture to an exothermic reaction. IV. Foaming the mixture within the closed reaction chamber. V. At least partially curing the foamed mixture within the closed reaction chamber. The method according to the invention is suitable for producing continuous or cut, especially rectangular foamed bodies having an apparent density of about 150 to 500 kg/m<3>. |
