procédé chaux-soude

Désignations

Codes : pays ou zone où la désignation a cours (CH, FR, DE, EU = Union européenne, INT = usage international). Une désignation barrée est déconseillée.

Définitions

anglais

[A process where] sodium carbonate is treated with calcium hydroxide to create calcium carbonate and sodium hydroxide. The precipitated calcium carbonate and the NaOH in solution are then fed to ""thickeners"" where a 12% caustic soda solution is obtained accompanied by a calcium carbonate cake. The cake is then burned for reuse in the process. Air pollution results in this process from lime dust, kiln gases, etc. These can be controlled by scrubbers.