CLAY-PHOSPHATE MATERIAL Russian patent published in 2013 - IPC C04B28/34 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to construction materials. The clay-phosphate material, which contains clay, iron-containing metallurgical wastes with 5-7% residue on sieve No.008, containing iron (II) oxide and orthophosphoric acid with density of 1.25 g/cm³, contains Cambrian clay and additionally contains polyacrylonitrile fibre which is oxidised at 300°C, with the following ratio of components, wt %: Cambrian clay 66-67, said iron-containing wastes 10-12, said oxidised polyacrylonitrile fibre 4-5, orthophosphoric acid with density of 1.25 g/cm³ - the balance.

EFFECT: high heat conductivity of the material.

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