ACICULAR OR COLUMNAR PARTICLE OF CALCIUM CARBONATE HAVING HIGH PURITY ARAGONITE STRUCTURE FORMED BY CARBON DIOXIDE BUBBLING METHOD, AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an acicular or columnar crystallized material having a high purity aragonite structure requiring no additive and to provide a method for manufacturing the crystal.;SOLUTION: After ammonium water is added to the aqueous solution of calcium chloride to adjust the pH corresponding to the aimed form, CO₂ gas is blown at a temperature of 60°C or higher to produce a crystallized material having an aragonite structure. The method for manufacturing the crystal is also provided.;COPYRIGHT: (C)2008,JPO&INPIT