PROCESS FOR PREPARING FINELY DIVIDED LIMESTONE

摘要

A process is disclosed for providing finely divided limestone products. Limestone is abrasively ground in an aqueous medium in the presence of added dissolved carbon dioxide or in the presence of a soluble acid-forming compound, the anion of which forms a soluble calcium compound, or in the presence of both dissolved carbon dioxide and an acid-forming compound. A dry flue gas desulfurization process using the finely divided limestone product of the process of the invention is also provided.