CLAY-PHOSPHATE MATERIAL Russian patent published in 2010 - IPC C04B28/34 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to clay-phosphate material and can be used in production of construction blocks in industrial in civil construction. Clay-phosphate material contains wt %: loam 30-35; iron-containing wastes of metallurgic production with residue on sieve No 008 7-11 wt %, containing iron (II) oxide, 6-8, wastes of sandblast machine operation, containing wt %: SiO₂ - 35.05, Al₂O₃ - 4.00, Fe₂O₃ - 30.00, FeO - 25.10, CaO - 2.00, MgO - 3.00, Cu²⁺ - 0.50, Zn²⁺ - 0.35, 40-45, orthophosphoric acid with density 1.24-1.25 g/cm³ - the remaining part.

EFFECT: increase of strength with preservation of water-resistance.

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