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 containing loam, iron-containing wastes of metallurgic production with residue on sieve No 008 7-11 wt %, containing iron (II) oxide 96 wt %, orthophosphoric acid with density 1.24-1.25 g/cm³, foundry wastes with residue on sieve No 008 10-12, containing wt %: SiO₂ - 87.45, Al₂O₃ - 6.00, Fe₂O₃ - 1.05, FeO - 3.18, CaO - 0.92, MgO - 0.45, TiO₂ - 0.12, SO₃ - 0.26, K₂O - 0.21, Na₂O - 0.36, with the following ratio of components, wt %: loam 40-45, said iron-containing wastes - 6-8, said foundry wastes - 30-35, 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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