Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Agitating or moving electrolyte during coating
Patent
1991-08-19
1992-05-12
Tufariello, T. M.
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Agitating or moving electrolyte during coating
204115, 205305, C25D 2100
Patent
active
051124475
ABSTRACT:
In the electroplating of certain metals, such as zinc, a metal build-up in the electroplating bath occurs due to a higher anode efficiency than cathode efficiency, in the cell, and also due to chemical dissolution of the anode in the electroplating bath. An electrowinning cell is provided to remove metal from the electroplating bath. The electrowinning cell is operated with a current sufficient to remove metal from the bath substantially equal to that chemically dissolved into the bath as well as the build-up due to the difference in the anodic and cathodic efficiencies.
REFERENCES:
patent: 4234401 (1980-11-01), Brannan
patent: 4906340 (1990-03-01), Brown
Brannan James R.
Gestaut Lawrence J.
Groszek Donald J.
Vaccaro Anthony J.
Eltech Systems Corporation
Freer John J.
Tufariello T. M.
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