COMPOSITION FOR PRODUCING HEAT-RESISTANT CONCRETE Russian patent published in 2016 - IPC C04B28/34 C04B14/00 C04B111/20 

FIELD: construction.

SUBSTANCE: invention relates to construction materials, particularly to production of heat-resistant concrete based on chemical binders in form of phosphate binders. This is achieved by adding to composition based on phosphoric acid, slag from smelting of ferrotitanium, sand and nepheline sludge waste of spent catalyst containing, %: SiO₂ - 31.9; Al₂O₃ - 5.8; Fe₂O₃ - 4.3; CaO - 55.7; MgO - 1.4; R₂O - 1.8 and SO₃ - 0.5, at following ratio of components, wt.%: spent catalyst IM-2201 10-15, nepheline dump sludge 33-40, sand 10-13, H₃PO₄ 10-15, slag from smelting ferrotitanium 24-30.

EFFECT: technical result is increasing ultimate compression strength and heat resistance of refractory concrete.

1 cl, 4 tbl