VATERITE-TYPE SPHERICAL CALCIUM CARBONATE AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for producing vaterite-type spherical calcium carbonate which is exactly spherical and has a small particle diameter and a sharp particle-size distribution.;SOLUTION: The method for producing vaterite-type calcium carbonate is characterized by reacting CaCl₂ or Ca(NO₃)₂ with a carbonate in the aqueous solution in the presence of a reaction buffering agent while irradiating with an ultrasonic wave, and the vaterite-type spherical calcium carbonate is produced by the method.;COPYRIGHT: (C)2011,JPO&INPIT