COMPOSITION FOR MANUFACTURING OF FIREPROOF CONCRETES Russian patent published in 2015 - IPC C04B28/34 

FIELD: construction.

SUBSTANCE: composition for manufacturing of fireproof concretes contains, wt %: spent catalyst IM-2201 10-15, crushed carbonate rocks of fraction 5-10 mm 33-40, H₃PO₄ 10-15, dolomite siftings 10-13, sludge formed as a result of aluminium and its alloys etching with concentrated solutions of caustic soda with content, wt %: SiO₂ - 4.5; Al₂O₃ - 78.5; Fe₂O₃ - 2.9; CaO - 2.5; MgO - 1.1; R₂O - 4.1; ignition loss - 6.4, 24-30.

EFFECT: increased compression strength and heat resistance of fireproof concretes, recycling of industrial wastes.

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