Red mud processing

Details Red mud processing Red mud processing

C - Chemistry, Metallurgy

01

F

C01F 7/06 (2006.01) C01D 7/00 (2006.01)

Patent

CA 2246528

Soda and/or alumina values are recovered from sodium-aluminium-silicate desilication product (DSP) found in red mud formed in a Bayer process. DSP is mechanically activated to induce a mechanochemical reaction whereby soda and/or alumina values are solubilised.

L'invention concerne la récupération, sous une forme réultilisable, de la soude et/ou de l'alumine, à partir du produit de désilicification (silicate de sodium et d'aluminium) présent dans les boues rouges produites par le procédé Bayer. Ce produit est activé mécaniquement pour induire une réaction chimico-mécanique au cours de laquelle la soude et/ou l'alumine sont solubilisées.

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