Electrode binder

Details Electrode binder Electrode binder

C - Chemistry, Metallurgy

10

C

C10C 3/00 (2006.01) C10G 9/00 (2006.01) C10G 51/02 (2006.01)

Patent

CA 2468061

The present invention provides a process for the preparation of an electrode binder, which process comprises: - (a) thermally cracking a non-hydrotreated thermal tar feedstock having an aromatic content of less than 65 % wt; (b) separating the thermally cracked product of step (a) in a separator, into at least a top fraction and a bottom fraction, and (c) subjecting the bottom fraction from step (b) to vacuum distillation, to yield, as a vacuum distillation residue, an electrode binder, and an anode binder obtainable by said process for use in aluminium production.

L'invention concerne un procédé de préparation d'un liant d'électrode consistant (a) à craquer thermiquement une matière première goudronneuse n'ayant pas subi d'hydrotraitement, dont la teneur en aromatiques est inférieure à 65 % en poids, (b) à séparer, dans un séparateur, le produit craqué thermiquement dans l'étape (a) en au moins une fraction de tête et une fraction de queue, et (c) à soumettre la fraction de queue de l'étape (b) à une distillation sous vide afin d'obtenir en tant que résidu de distillation un liant d'électrode, ce liant étant utilisé dans des anodes en production d'aluminium.

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