SU773013A1 - Fire-resistant binder and its preparation method - Google Patents

Description

Aluminum-containing component Else In this case, the method of preparing a refractory to a binder by mixing the aluminum-containing component, phosphoric acid and phosphate aluminin is carried out by preliminary mixing of the aluminum-containing component and phosphoric acid in an amount of 6-53% in terms of 0% by weight. ° C, after which the product of burning in the form of a powder from aluminum orthophosphate or aluminum pyrophosphate is combined with orthophosphoric acid and an aluminum-containing component.

Preparing the phosphate-alumina-containing component by the production of powdered alumina with orthophosphoric acid, taken in an amount of 6-53%, is stirred until uniform. semi-dry mixes

consistency, t is heated; for 2-3 at 600-1200 0. The dry powder obtained after firing, containing three-substituted aluminum phosphates in the form of orthophosphate or pyrophosphate, and alcmini oxide, is sealed with a solution of orthophosphoric acid in an amount of 2-20% (based on the total Compositions in the substance, parameters 0 of the method of its preparation and physicomechanical properties are presented in the table.

From the data in the table it can be seen that the strength in the samples based on the substrate during curing under environmental conditions at a normal temperature significantly increased, and the strength after calcination increased by up to 60% as compared with the known invention.

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Claims (2)

VD Claim 1. Flame retardant, inclusive aluminum-containing component, ortho-phosphoric acid and aluminum phosphate, which is different from the fact that, in order to solidify the plastic-like consistency at normal temperature and increase strength after firing, it contains as aluminum phosphate annealed at 600-1200®S orthophosphate or aluminum pyrophosphate in the following ratio of components, wt.%: Orthophosphoric acid {in terms of P, OJ 2-20 Burned at 600-1200 ° C orthophosphate or aluminum pyrophosphate 10-60 Aluminum containing comp nent Ostal2. A method of preparing a refractory resin according to claim 1 by mixing an aluminum-containing component, orthophosphoric acid and aluminum phosphate, characterized in that the mixture containing the aluminum-containing component and phosphoric acid in an amount of 6-53% based on the weight of the mixture is burned at 600–1200 ° C , after which the calcination product in the form of a powder from aluminum orthophosphate or aluminum pyrophosphate is combined with orthophosphoric acid and an aluminum-containing component. Sources of information taken into account during the examination 1. I. Kopeykin et al. Materials on oqHose metal phosphates, M., Himi; 1976, p. 40-42. 2. Gdlynko-Wolfson, S.L., et al. Chemical basis of technology and application of {phosphate bonds and coatings L., HilA1, 1968, p. B8-90.