Process for the preparation of finely divided precipitated...

C - Chemistry – Metallurgy – 01 – F

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C01F 11/18 (2006.01)

Patent

CA 1150930

P.C. 6322 PROCESS FOR THE PREPARATION OF FINELY DIVIDED PRECIPITATED CALCIUM CARBONATE Abstract A process for the preparation of finely divided precipitated calcite in which carbon dioxide is intro- duced into an aqueous calcium hydroxide slurry contain- ing anionic organopolyphosphonate polyelectrolyte with the carbonation started at a temperature above about 7 and below about 18°C.

392386

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