METHOD FOR PRODUCING A FIRE-RESISTANT HEAT INSULATION COMPOSITION Russian patent published in 2022 - IPC C04B28/30 C04B40/00 C04B9/00 C04B14/00 

FIELD: building materials.

SUBSTANCE: invention relates to the production of building materials and can be used for producing fire-resistant panels, partitions, ceilings, doors, and other structural elements used in building residential and industrial buildings in need of ensurance of fire safety and human life safety. Method for producing a fire-resistant heat insulation product includes mixing a magnesial binder, a filler in the form of 5 to 25% wt. expanded vermiculite and 5 to 25% wt. perlite to prepare a homogeneous mixture of dry components, followed by mixing with a tampering liquid in the form of an aqueous magnesium salt solution. The products are moulded, dried and subjected to finishing cutting. 60 to 70% wt. of the prepared magnesial binder in the form of a dry mixture based on caustic dolomite of the KD-aR brand, including dolomites, brucites and/or magnesites, kaolins, bentonites, talc, is previously used therein. Additionally, 0.5 to 10% wt. fibre and 2 to 4% wt. corrective additive in the form of a plasticiser are used. The tempering liquid is added at a ratio of 145 to 195% of the weight of dry components and mixed until homogeneous for 10 minutes.

EFFECT: increased reliability and prolonged operational life of the heat insulation product.

1 cl