METHOD FOR PRODUCING READILY-SOLUBLE CALCIUM CARBONATE POWDER AND CALCIUM CARBONATE POWDER OBTAINED THEREBY

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently producing a light calcium carbonate powder showing high water-solubility by an easy means.;SOLUTION: The readily-soluble light calcium carbonate powder is produced by preparing a high-concentration dispersion slurry from a light calcium carbonate powder and drying the same by bringing it into direct contact with a heated solid surface. The method enables formation of secondary agglomerated particles which has an average particle size of 10-50 μm and an apparent density of ≥0.5 g/cm³ as a result of agglomeration of primary particles having an average particle size of 1 μm.;COPYRIGHT: (C)2010,JPO&INPIT