Methods and apparatus for producing precipitated calcium...

Details Methods and apparatus for producing precipitated calcium... Methods and apparatus for producing precipitated calcium...

C - Chemistry, Metallurgy

01

F

C01F 11/18 (2006.01)

Patent

CA 2543875

A method for producing precipitated calcium carbonate includes, in one embodiment, forming a hydrate or an oxide composed of lime particles, greater than 95% of the lime particles being as fine as or finer than about 45 microns, and carbonating the hydrate or oxide to form precipitated calcium carbonate having a brightness greater than or equal to 94.

L'invention concerne un procédé destiné à produire un carbonate de calcium précipité. Dans un mode de réalisation, ce procédé consiste à former un hydrate ou un oxyde constitué de particules de chaux, plus de 95 % des particules de chaux présentant une dimension égale ou inférieure à environ 45 micromètres, et à carbonater l'hydrate ou l'oxyde de manière à former un carbonate de calcium précipité présentant un degré de blancheur supérieur ou égal à 94.

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