CLAY-PHOSPHATE MATERIAL Russian patent published in 2024 - IPC C04B28/34 C04B33/138 

FIELD: construction.

SUBSTANCE: invention relates to construction materials and can be used in production of building blocks in industrial and civil construction. Clay-phosphate material containing loam, iron-containing metallurgical wastes containing Fe (II) oxide with residue on sieve No. 008 7%, orthophosphoric acid with density of 1.25 g/cm³, contains dehydrated sludge of chemical water treatment of thermal power plant, containing wt.%: CaO – 81.7; MgO – 12.1; MnO₂ – 2.4; Fe₂O₃ – 2.3; CdO – 1.4; CuO – 0.06; HgO – 0.01; NiO – 0.01; PbO – 0.01; Cr₂O₃ – 0.01, with residue on sieve No. 008 7%, at following ratio of components, wt.%: loam 50-52, iron-containing wastes of metallurgical production, containing Fe (II) oxide with residue on sieve No. 008 of 7% – 3-5, said sludge of chemical water treatment of thermal power plant with residue on sieve No. 008 of 7% – 20-22, orthophosphoric acid with density of 1.25 g/cm³ – the rest.

EFFECT: lower thermal conductivity of the clay-phosphate material while maintaining water resistance.

1 cl, 1 tbl