C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
C25C 7/06 (2006.01) C25B 15/06 (2006.01)
Patent
CA 2449455
The invention relates to a method for the improvement of current efficiency in electrolysis. According to the method, a theoretical cell voltage is first calculated, which is compared with the measured voltage. The cumulative difference between the theoretical and measured cell voltage is monitored constantly and when this difference is proportioned to the current efficiency, information on the status of the process can be obtained continually. A decrease in current efficiency is a clear indicator of short circuits between the electrodes, and by means of the method according to the invention, it is possible to concentrate the short circuit removal work onto the correct cell groups, from the point of view of the current efficiency of the electrolysis.
La présente invention a trait à un procédé d'amélioration de l'efficacité de courant en électrolyse. Selon le procédé de l'invention, on calcule d'abord une tension théorique de cellule, que l'on compare à la tension mesurée. On contrôle la différence cumulative entre la tension théorique et la tension de la cellule mesurée et lorsque cette différence est proportionnelle à l'efficacité de courant, on peut obtenir en continu un information sur l'état du processus. Un réduction de l'efficacité de courant est une nette indication de courts-circuits entre les électrodes, et au moyen du procédé de l'invention, il est possible de concentrer l'opération de l'élimination de courts-circuits sur les groupes de cellules appropriés, du point de vue de l'efficacité de courant de l'électrolyse.
Rantala Ari
Virtanen Henri
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Outokumpu Oyj
Outotec Oyj
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