| abstract |
The invention relates to a method for producing casting molds, cores and basic mold materials regenerated therefrom, a mixture for combining with a solution or dispersion comprising water glass, for producting casting molds and/or cores, a mold material mixture, a basic mold material mixture and a casting mold or a core. The invention furthermore relates to the corresponding use of a quantity of particulate layered silicates having a d 90 value less than 45 μm or a corresponding mixture as an additive for producing a water glass and a mold material mixture comprising particulate, amorphous silicon-dioxide, said mixture being cured by chemically reacting components of the mold material mixture with each other, during production of a casting mold or a core, in order to facilitate disintegration and/or to increase the regeneration capability of the casting mold or core. |