CLAY-PHOSPHATE MATERIAL Russian patent published in 2006 - IPC C04B28/34 C04B111/20 

FIELD: building industry.

SUBSTANCE: invention relates to building materials. Clay-phosphate material comprising clay, iron-containing waste from metallurgic manufacture based on ferrous Fe (II) oxide with residue on sieve № 008 5-7% and ortho-phosphoric acid with density value 1.24-1.25 g/cm³ comprises additionally Cambrian blue clay and dolomitized limestone with residue on sieve № 008 15-17% in the following ratio of components, wt.-%: Cambrian blue clay, 56-57; indicated waste, 8-10; indicated dolomitized limestone, 16-17, and ortho-phosphoric acid with density value 1.24-1.25 g/cm³, the balance. Invention provides decreasing the heat-conductivity coefficient of clay-phosphate material.

EFFECT: improved and valuable properties of material.

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