C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/60 (2006.01) C02F 1/52 (2006.01) C02F 1/66 (2006.01) C02F 9/00 (2006.01)
Patent
CA 2720001
Method for purifying an aqueous composition by removing silicon therefrom, according to which a compound comprising aluminium is added to the aqueous composition in order to obtain a molar aluminium content greater than the molar silicon content in said composition, the pH of the composition is controlled and maintained at a value higher than or equal to 8 and lower than or equal to 10, and the precipitate formed is separated from the aqueous suspension obtained.
L'invention porte sur un procédé pour purifier une composition aqueuse par le retrait de silicium de celle-ci. Selon le procédé, un composé contenant de l'aluminium est ajouté à la composition aqueuse afin d'obtenir une teneur en aluminium molaire supérieure à la teneur en silicium molaire dans ladite composition, le pH de la composition étant régulé et maintenu à une valeur supérieure ou égale à 8 et inférieure ou égale à 10, et le précipité formé est séparé de la suspension aqueuse obtenue.
Robic
Solvay (societe Anonyme)
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