Wet type comminution the light calcium carbonate which is produced with causticization process of the paper null pulp manufacturing process which production manner of the slurry of the light calcium carbonate which

摘要

PROBLEM TO BE SOLVED: To provide a crushed causticized precipitated calcium carbonate slurry having a sharp particle size distribution, and to provide paper coated with a coating liquid containing the slurry.;SOLUTION: A method for wet-crushing the precipitated calcium carbonate produced in the causticization step of a pulp production process to produce the slurry for obtaining a coating pigment to be blended with the coated paper, includes supplying and crushing a slurry containing the precipitated calcium carbonate produced in the causticization process of the pulp production process to a medium stirring crusher formed so that the stirring member of the crusher used for the wet crushing forms a double rotor.;COPYRIGHT: (C)2010,JPO&INPIT