Process for the preparation of fine waste comprising calcium carbonate

摘要

fine waste comprising at least one material containing calcium carbonate, fine to waste) have a solids content of 78.0 wt% to 90.0 wt%, based on the total weight of the fine waste , b) particles comprising at least one material containing calcium carbonate having a i) particle size d75 by weight 0.7 to 3.0 microns, ii) a median diameter of particle size d50 by weight 0.5 to 2.0 microns, iii) a particle size d25 by weight of 0.1 to 1.0 microns, as measured by the sedimentation method, c) comprising particles of at least one material containing carbonate calcium having a BET specific surface area of ​​4.0 to 12.0 m2 / g, measured by nitrogen gas adsorption using BET isotherm (ISO 9277: 2010).