Process for purifying highly impure calcium hydroxide and for pr

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Alkaline earth metal

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423309, 423432, 423490, 423636, 4236585, 562597, C01F 1100, C01F 1118, C01B 2532, C07C 5506

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active

058465006

ABSTRACT:
A solution process for the purification of calcium hydroxide, particularly from hydrated carbide lime, which is subsequently used as a feed stock for a high-value calcium product, preferably calcium carbonate. Precipitated calcium carbonate is formed by reaction of the purified calcium hydroxide solution with carbon dioxide in a plug-flow reaction system.

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H. Kawaguchi, et al., "Crystalliztiona of Inorganic Compounds in Polymer Solutions. Part I: Control of Shape and Form of Calcium Carbonate" Colloi Polymer Science, 270:1176 1181 (1992).
S. Wachi, et al. "Efect of Gas Liquid Mass Tranfer on Size Distribution During the Batch Precipitation of Calcium Carbonate" Chemical Engineering Science, vol. 46, No. 12, pp. 3288-3293 (1991).
Carr et al. "Calcium Carbonate" Kirk-Othmer Encyclopedia of Chemical Technology, 4th Ed., vol. 4, pp. 796-801.

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