Inventors:
Vasant D. Chapnerkar - Tampa FL
Mohan N. Badgujar - Milledgeville GA
Assignee:
ECC International Inc. - Atlanta GA
International Classification:
C01F 524
C01F 1118
Abstract:
A process for producing rhombic or barrel shaped precipitated calcium carbonate. Quicklime is slaked in an aqueous solution containing about 0. 1% to about 2% by weight of a sugar, based upon the weight of the CaCO. sub. 3 to be produced. Carbon dioxide is added to the slaked lime slurry at a preferred temperature of about 50. degree. F. -70. degree. F. until the pH drops from about 11-12 to about 7-8.