ASH-CEMENT BINDER (ZOLCIT) BASED ON ACID ASHES OF THERMAL POWER PLANTS Russian patent published in 2012 - IPC C04B7/28 

FIELD: construction.

SUBSTANCE: binder comprises a complex additive of the following composition, wt %: calcium sulfate hemihydrate 40, calcium chloride 30, superplasticiser 30, at the following ratio of components, wt % : acid flue ash of TPP 30 - 40, bauxite or nepheline slag 20 - 30, complex additive 3-5, portland cement - balance, jointly ground to the specific surface of 4500-5500 cm²/g. Joint grinding of binder components is carried out in devices of disintegration principle of operation at linear speeds of rotor movement, at least, 70 m/s.

EFFECT: production of high-grade ash-cement binder with low brittleness ratio, high technological properties and possibility of wider recycling of acid ashes of TPP.

2 cl, 6 tbl, 1 dwg