METHOD OF PRODUCING CEMENT WITH MINERAL ADDITIVE Russian patent published in 2009 - IPC C04B7/12 C04B7/52 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing cement with a mineral additive. In the method of producing cement with a mineral additive, involving grinding portland cement clinker with gypsum, superplasticiser C-3, silica mineral additive, with subsequent re-grinding with the silica mineral additive, grinding is done until obtaining specific surface area of 400-600 m²/kg, and the silica mineral additive is taken in amount of 5-28 wt % of the said components, grinding to specific surface area of 300-390 m²/kg, using silica mineral additive in amount of 30-70 wt % of cement.

EFFECT: improved structural and technical properties of cement, longer storage period of the cement while preserving hydraulic activity.

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