PROCEDURE OF PRODUCTION OF SLAG-ALKALINE BINDING Russian patent published in 2009 - IPC C04B7/36 C04B7/153 

FIELD: building.

SUBSTANCE: invention refers to building materials production and can be implemented at production of slag-alkaline binding on base of magnesia-ferrous slag of non-ferrous metallurgy for fabrication of building mortars and concrete. According to the procedure of production of slag-alkaline binding including grinding of granulated magnesia-ferrous slag and tempering of ground slag with solution of alkaline reagent, grinding of slag is performed with contents of moisture 2-7 wt % of slag weight at presence of carbon dioxide at its partial pressure 0.03-0.10 MPa till there is achieved degree of slag carbonisation, specified according to dependence: C=k_o+k₁·S_specif., where: C is degree of slag carbonisation, wt % CO₂, k_o and k₁ are empiric coefficients, k_o=0.02-0.05 wt %, k₁= (1.0-2.5)·10^-3 wt % kg/m², S_specif. is specific surface of slag, m²/kg. Invention is developed in dependent points of formula.

EFFECT: increased rate of slag-alkaline binding hardening and its strength at earlier periods of hardening.

3 cl, 4 ex