CLAY-PHOSPHATE MATERIAL Russian patent published in 2007 - IPC C04B28/34 C04B33/138 

FIELD: building materials, building industry.

SUBSTANCE: invention proposes clay-phosphate material comprising loam, iron-containing waste from metallurgic manufacture with residue on sieve № 008 7-11% containing Fe (II) oxide, ortho-phosphoric acid of density 1.24-1.25 g/cm³ and furnace slag with residue on sieve № 008 5-7% containing the following components, wt.-%: CaO, 37-39; SiO₂, 34-37; Al₂O₃, 9-11; MgO, 10-11; MnO, 0.2-0.5; Fe₂O₃, 1-4; S, 0.6-0.8, and TiO₂, 1.2-1.3, in the following ratio of components in clay-phosphate material, wt.-%: loam, 54-58; iron-containing waste from metallurgic manufacture with residue on sieve № 008 containing Fe (II) oxide 7-11%, 4-8; indicated slag, 25-30, and ortho-phosphoric acid of density 1.24-1.25 g/cm³, the balance. Invention can be used in manufacturing building blocks. Invention provides enhancing strength and retaining water resistance of clay-phosphate material.

EFFECT: improved and valuable properties of material.

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