SLAG-LIME BINDER GRAUND M AND METHOD OF PRODUCING SAID SLAG-LIME BINDER Russian patent published in 2009 - IPC C04B7/153 

FIELD: chemistry.

SUBSTANCE: invention relates to industrial construction materials. The method involves dehydration of volcanic ashes and blast furnace or electrothermophosphorus granulated slag in horizontal type drying drums or pneumatic driers at 150-250°C, cooling in refrigerators to 20-85°C, dosing the said slag and ash and technical modified lignosulphonate - LST-M with averaging of composition in a continuous running screw mixer, grinding the obtained mixture in a centrifugal-impact action grinder to a fraction with particle size 0-80 mcm and specific surface area 2800-5000 cm²/g while returning the fraction greater than 80 mcm separated in continuous running air classifier for re-grinding and subsequent mixing with an alkaline activator containing, wt %: 20-25% aqueous solution of sodium hydroxide NaOH or caustic soda 20-75, liquid glass with density 1.15-1.26 g/cm³ 25-75, with the following ratio of components, wt %: said slag 81.80-94.20, alkaline activator (per dry substance) 3.85-7.27, volcanic ash 1.92-9.09, LST-M (per dry substance) 0.2-1.5% of the mass of said slag and ash (over 100%). Binder, obtained using the method described above.

EFFECT: increased compression strength of binder, control of initial setting of slag-lime dough and prevention of efflorescence of the alkaline component of the binder on the surface of objects made form solutions and concrete.

2 cl, 6 tbl