SU628126A1 - Raw mixture for making heat insulating articles - Google Patents

Description

complex configuration, monolithic heat insulation or filling ± light for heat resistant concrete.

Example. To obtain a light aluminophosphate-material with a mass of 700-600 kg / m with a refractoriness higher than 170 ° C, a raw mixture of finely ground corundum with a specific surface of 3000 cm / g of orthophosphoric acid of 70% concentration of center and dispersed aluminum in the form of activated carbon is prepared. fractions 0.5 and 0.125 mm.

In tab. 1 shows the compositions of the proposed mixture (1 and 2) and the known (3).

Table I

hardening, drying and drying. The bulk density of the pellets of the 20-0.14 mm fraction is BOO-ZOO kg / m

The results of the test samples are presented in tab.2.

Table 2

Claims (2)

In order to obtain products-slabs, they are laid in a mold, rendering the material out and hardening. After vania is extracted from and sushi. Spherical form filler by molding from a mixture of raw ingredients to granules / p Formula of the invention Raw materials for the manufacture of heat insulating products, including heat, high-alumina component, orthophosphoric acid and dispersed aluminum, about 50 that, in order to increase the strength and refractoriness of products, as well as reduce their bulk, it also contains activated coal with dispersity of l at the next correlation ratio. Bec.Ss Orthophosphoric acid, 2S-40 Dispersed aluminum 0.5-10, O Active ROVANG S - COAL O, 5-1.13 High alumina component Other Sources of ikforgatatsii, accepted in BHKiviaHJie during the examination: 1. Authors certificate of the USSR 9 220119, cl . From 04 To 43/00 ,, 1966. 2. USSR author's certificate No. 325820, class, C 04 B 29/02, 1970.