CLAY-PHOSPHATE MATERIAL Russian patent published in 2009 - IPC C04B28/34 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to building materials and can be used for producing building blocks in industrial and civil building. Clay-phosphate material, which includes loam, iron-containing wastes of metallurgical production, which contains Fe (II) oxide with remainder on sieve No 008 - 7-11 wt %, orthophosphoric acid, with density 1.24 - 1.25 g/cm³, ashes from burning of dehydrated sediments of installations for industrial sewage purification which contains wt %: SiO₂ - 57.39, Al₂O₃ - 0.34, Fe₂O₃ - 0.39, CaO - 1.67, MgO - 0.78, SO₃ - 6.15, P₂O₅ - 3.62, K₂O - 0.11, Na₂O - 28.36, Mn₃O₄ - 1.19, with following component ratio, wt %: loam-40-45, said iron-containing wastes - 6-8, said ashes - 30-35, orthophosphoric acid with density 1.24-1.25 g/cm³ - the remaining part.

EFFECT: increasing durability of clay-phosphate material preserving water-resistance.

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