PRODUCTION OF NANOCEMENT AND NANOCEMENT Russian patent published in 2015 - IPC C04B7/12 B82B1/00 

FIELD: process engineering.

SUBSTANCE: invention relates to production of nanocement. Proposed process comprises grinding by crushing rolls of Portland cement clinker, mineral siliceous additive containing SiO₂ in amount of at least 30 wt % and gypsum stone to the following grain size, wt %: 15-25 mm - 10-15; 5-7 mm - 15-20; powder - 60-75. Obtained mix is homogenized in the mixer by forced mixing. Then, it is subjected to mechanochemical activation in three-chamber ball mill to specific surface of 300-900 m²/kg. Polymer modifying agent is added to said ball mill which contains at least 60 wt % of sodium naphthalene sulphonate to form on Portland cement grains the solid nanocapsules of 20-100 nm in depth composed by C₁₀H₇SO₃CaNa at the following ratio of initial components, wt %: Portland cement clinker - 30.0-90.0, gypsum stone - 0.3-6.0, modifying agent - 0.5-2.0, said mineral siliceous additive making the rest. Invention relates also to nanocement thus produced.

EFFECT: higher properties of cement to class of 72,5-82,5, lower costs, fuel saving, decreased emissions of NO_x, SO₂ and CO₂.

2 cl, 7 dwg, 11 tbl