Process for continuously regenerating ferric chloride solutions

Details Process for continuously regenerating ferric chloride solutions Process for continuously regenerating ferric chloride solutions

1981-10-27

1983-08-02

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 702

Patent

active

043964753

ABSTRACT:
The continuous electrolytic regeneration of ferric chloride solutions used for etching metals is effected by transferring the partially exhausted solution to the anodic space of an electrolyzer where it is exposed to direct current. The etched metal is deposited on the cathode, and the Fe.sup.2+ is oxidized to Fe.sup.3+ in the anodic space. The latter is separated from the cathodic space through a diaphragm and the regenerated solution is recirculated to the etching bath.

REFERENCES:
patent: 3622478 (1971-11-01), Beyer
patent: 3788915 (1974-01-01), Gulla
patent: 4269678 (1981-05-01), Faul et al.

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