Huttenes-albertus Chemische Werke Gesellschaft MIT Beschrankter Haftung

Maria Schweinefuss

Lukas Mirko Reinold

Christian Lustig

René Vargovic

Azghar Munshi

What is described is a process for producing an article for use in the foundry industry selected from molds, cores, feeder elements and molding material mixtures, and includes the following steps: (S1) producing or providing a binder system with the following components in three spatially separate vessels: a component (A) particulate amorphous silicon dioxide, a first liquid component (B) waterglass, and a second liquid component (C) aluminate ions dissolved in an aqueous phase, (S2) contacting a mold base material (D) and constituents of all the components (A), (B) and (C) of the binder system in predetermined ratios in one or more steps, so as to result in a molding material mixture in which the aluminate ions and the particulate amorphous silicon dioxide are mixed wholly or partly into the waterglass, wherein steps (S1) and (S2) are conducted in a facility for producing molding material mixtures. Also described are a corresponding molding material mixture and apparatuses and uses.

Method for producing an article for use in the foundry industry, corresponding mold, core, feed element, or molding material mixture, and devices and uses

What are described is a process for producing casting molds, cores and mold base materials regenerated therefrom, a mixture for combination with a solution or dispersion comprising waterglass for production of casting molds and/or cores, a molding material mixture, a mold base material mixture, and a casting mold or a core. What is also described is the corresponding use of an amount of particulate sheet silicates having a dof less than 45 &#x3bc;m or a corresponding mixture as additive for production of a molding material mixture comprising waterglass and particulate amorphous silicon dioxide, which is cured by chemical reaction of constituents of the molding material mixture with one another, in the production of a casting mold or a core, to facilitate the breakdown and/or to increase the regeneratability of the casting mold or core.

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Hannover, Germany

Maria Schweinefuss