Reduction of impurities in bayer process alumina trihydrate

Details Reduction of impurities in bayer process alumina trihydrate Reduction of impurities in bayer process alumina trihydrate

C - Chemistry, Metallurgy

01

F

C01F 7/46 (2006.01) C01F 7/14 (2006.01)

Patent

CA 2234765

Processes for reducing the level of impurities in alumina trihydrate produced in the Bayer process are disclosed, wherein alumina trihydrate-containing process streams are flocculated with hydroxamated polymers and centrifuged.

L'invention porte sur un procédé de réduction du niveau d'impuretés dans du trihydrate d'alumine produit selon le procédé Bayer dans lequel les courants de processus contenant le trihydrate d'alumine sont floculés à l'aide de polymères hydroxamatés puis centrifugés.

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