Metal electrowinning cell with electrolyte purifier

Details Metal electrowinning cell with electrolyte purifier Metal electrowinning cell with electrolyte purifier

2004-08-10

2010-12-07

Bell, Bruce F (Department: 1795)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S243100, C205S372000, C205S385000, C205S386000, C205S387000

Reexamination Certificate

active

07846309

ABSTRACT:
A cell for electrowinning a metal, in particular aluminium, from a compound thereof dissolved in an electrolyte (30) comprises an anode (40) and a cathode (10,11) that contact the electrolyte (30), the cathode (10,11) being during use at a cathodic potential for reducing thereon species of the metal to be produced from the dissolved compound. The electrolyte (30) further contains species of at least one element that is liable to contaminate the product metal (20) and that has a cathodic reduction potential which is less negative than the cathodic potential of the metal to be produced. The cell further comprises a collector (50) for removing species of such element (s) from the electrolyte (30). During use the collector (50) is at a potential that is: less negative than the cathodic potential of the produced metal (20) to inhibit reduction thereon of species of the metal to be produced; and at or more negative than the reduction potential of the species of said element(s) to allow reduction thereof on the collector (50). The cell is so arranged that species of said element(s) are reduced on the collector (50) rather than on the cathode (10,11) so as to inhibit contamination of the product metal (20) by said element(s).

REFERENCES:
patent: 4115215 (1978-09-01), Das et al.
patent: 4214956 (1980-07-01), Bowman
patent: 4670110 (1987-06-01), Withers et al.
patent: 6245201 (2001-06-01), Rendall
patent: 2004/0216997 (2004-11-01), De Nora
patent: 2005/0269202 (2005-12-01), De Nora et al.

Affiliated with

Also associated with

Rating

Metal electrowinning cell with electrolyte purifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metal electrowinning cell with electrolyte purifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal electrowinning cell with electrolyte purifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4221039