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AssigneeSika Technology AG
InventorsThomas HELLER, Thomas MÜLLER, Johannes UNSELD
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The use of a grinding additive during the dry grinding of mineral materials, especially limestone, characterized in that the grinding additive is selected from the group made of alkanolamines, glycols, glycerol, sugars, sugar acids, carboxylic acids or their salts, superplasticizers, superabsorbent polymers, or mixtures thereof. Also, ground mineral materials, especially ground limestone, including the additives and the use of the ground mineral materials, especially ground limestone, in cement and/or construction materials.
A method comprising:
A ground mineral material obtained by dry grinding a mineral material in the presence of a grinding additive selected form the group consisting of alkanolamines, glycols, glycerol, sugars, sugar acids, carboxylic acids or their salts, superplasticizers, superabsorbent polymers, or mixtures thereof.
A method to increase the efficiency of the dry grinding of a mineral material, wherein the mineral material is dry ground together with a grinding additive comprising or essentially consisting of N-methyldiethanolamine (MDEA) and wherein the grinding additive is added to the mineral material prior to and/or during grinding.
A method to increase the early strength of a cementitious material the method comprising a step of adding a ground mineral material to the cementitious material, wherein a grinding additive comprising or essentially consisting of N-methyldiethanolamine (MDEA) is added to the mineral material prior to and/or during the grinding thereof.
Dependencies are inferred from the claim text.