PROCEDIMENTO PER LA PRODUZIONE DI SOSPENSIONI ACQUOSE DI CARBONATO DI CALCIO

摘要

A method of producing an easily pumpable aqueous suspension of a natural calcium carbonate material containing at least 60% by weight of particles smaller than 2 microns equivalent spherical diameter comprises forming an aqueous suspension of said natural calcium carbonate material and a minor amount of a compound which contains calcium ions or carbonate ions and has a solubility in water of at least 0.05 g per 100 ml of water at 25 DEG C; and thereafter deflocculating the natural calcium carbonate material in said aqueous suspension with a dispersing agent.