| abstract |
The present invention relates to a method for classifying mineral material, using a classification-assisting additive that contains glycerol and/or at least one polyglycerol and allows air classification effectiveness to be increased or uses less specific classification energy than additive-free air classification, while obtaining a classified mineral material that is compatible with use in an aqueous medium. The invention also relates to the use of the resulting product in paints, plastics, food and feed, pharmaceutical formulations, paper mass and paper coatings. |