Method for coproducing calcium carbonate and sodium hydroxide

Details Method for coproducing calcium carbonate and sodium hydroxide Method for coproducing calcium carbonate and sodium hydroxide

C - Chemistry, Metallurgy

01

F

C01F 11/18 (2006.01) C01D 1/04 (2006.01) C01D 1/22 (2006.01)

Patent

CA 2209343

A method for coproducing calcium carbonate and sodium hydroxide by causticising sodium carbonate using milk of lime, separating the calcium carbonate and sodium hydroxide produced in the causticising step, and carbonating a mixture of milk of lime and calcium carbonate from the causticising step.

Procédé de coproduction de carbonate de calcium et d'hydroxyde de sodium, comprenant: une caustification de carbonate de sodium par du lait de chaux; une séparation du carbonate de calcium et de l'hydroxyde de sodium formés à l'étape de caustification; et une carbonatation d'un mélange de lait de chaux et du carbonate de calcium issu de l'étape de caustification.

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