Method and apparatus for crystallizing a mineral substance

Details Method and apparatus for crystallizing a mineral substance Method and apparatus for crystallizing a mineral substance

B - Operations, Transporting

01

D

B01D 9/02 (2006.01) B01D 9/00 (2006.01)

Patent

CA 2086017

A method and an apparatus for crystallizing a mineral substance in a fluidized bed of crystals (14) generated by circulating a supersaturated solution of the substance to be crystallized upwards through a fluidized bed reactor distributor (12) located under the bed (14), whereafter a fraction (22) of the supersaturated solution is drawn off upstream from the distributor (12) and recycled downstream therefrom in the fluidized bed (14) or the mother liquor of crystallization, and said mother liquor is supersaturated to recreate the above-mentioned supersaturated solution.

Procédé et installation pour la cristallisation d'une substance minérale dans un lit fluidisé de cristaux (14), que l'on génère en soumettant une solution sursaturée en la substance à cristalliser à une circulation ascendante à travers un distributeur (12) de réacteur à lit fluidisé, situé sous le lit (14), on dérive une fraction (22) de la solution sursaturée en amont du distributeur (12) et on la recycle en aval du distributeur (12) dans le lit fluidisé (14) ou dans l'eau mère de la cristallisation et on sursature l'eau mère pour reconstituer la solution sursaturée précitée.

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