Process to disperse and/or grind and/or concentrate calcium carbonate in aqueous media using an aqueous solution containing zirconium compounds

摘要

The present invention is directed to a process for manufacturing a calcium carbonate product by the steps of (i) contacting calcium carbonate with of one or more zirconium compounds in an aqueous suspension and/or of an aqueous emulsion and/or of an aqueous solution to obtain a calcium carbonate-containing slurry, and (ii) grinding the calcium carbonate-containing slurry to obtain a calcium carbonate product.

主权项

1. A process for manufacturing a calcium carbonate product comprising the steps of (i) contacting calcium carbonate with a grinding aid agent in water to obtain a calcium carbonate-containing slurry, wherein the grinding aid agent comprises a zirconium compound selected from the group consisting of ammonium zirconium carbonate, potassium zirconium carbonate, and mixtures thereof, and (ii) grinding the calcium carbonate-containing slurry to obtain a calcium carbonate product.