Process for the preparation of finely divided precipitated calci

Details Process for the preparation of finely divided precipitated calci Process for the preparation of finely divided precipitated calci

1980-12-18

1983-01-04

Straub, Gary P.

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

423266, C01F 524, C01F 1128

Patent

active

043672078

ABSTRACT:
A process for the preparation of finely divided precipitated calcite in which carbon dioxide is introduced into an aqueous calcium hydroxide slurry containing anionic organopolyphosphonate polyelectrolyte with the carbonation started at a temperature above about 7.degree. and below about 18.degree. C.

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patent: 3126253 (1964-03-01), Podschus
patent: 4157379 (1979-06-01), Arika et al.
Juvekar et al., Absorption of CO.sub.2 in a Suspension of Lime Chemical Engr. Science 1973 vol. 28 pp. 825-837.
Attarian et al., pH Control of a Continuous Precipitator, Canadian Journal of Chemical Engineering vol. 54 Dec. 1976, pp. 606-611.
Chapnerkar, Nucleation and Crystal Growth Phenomenon in Making Precipitated Calcium Carbonates, Paper Presented at Aiche 69 National Meeting, May 17-19, 1969.
Buehrer et al., The Inhibiting Action of Minute Amounts of Sodium Hexametaphosphate on the Precipitation of Calcium Carbonates from Ammonical Solutions, J. Phys. Chem., vol. 44, 1940, pp. 552-575.
Reddy et al., Prepared Papers, National Meeting, Div. Water, Air and Waste Chem., Amer. Chem. Soc., 12, No. 2, 212-216, Aug. 1972.
Reddy et al., Desalination, 12, 61-73, 1973.

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