Production of aqueous calcium carbonate suspensions

Details Production of aqueous calcium carbonate suspensions Production of aqueous calcium carbonate suspensions

C - Chemistry, Metallurgy

01

F

6/225

C01F 11/18 (2006.01) C09C 1/02 (2006.01) C09D 17/00 (2006.01)

Patent

CA 1036302

IMPROVEMENTS IN OR RELATING TO THE PRODUCTION OF AQUEOUS CALCIUM CARBONATE SUSPENSIONS ABSTRACT OF THE DISCLOSURE 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°C; and thereafter deflocculating the natural calcium carbonate material in said aqueous suspension with a dispersing agent. - 1 -

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