Regeneration of etching solution containing carbon particles...

Details Regeneration of etching solution containing carbon particles... Regeneration of etching solution containing carbon particles...

C - Chemistry, Metallurgy

25

F

204/80

C25F 3/02 (2006.01) C23F 1/46 (2006.01) C25F 7/02 (2006.01)

Patent

CA 1160592

Abstract of the Disclosure Method and apparatus for regenerating etching solutions obtained by chemically processing metallic surfaces, which solutions contain cupric chloride and/or ferric chloride. The apparatus includes between the anode and the cathode a diaphragm or an ion exchange membrane. The etching solution is passed through the electrolysis cell for anodic oxidation of the cuprous and/or ferrous ions obtained by etching of the metallic surface of a workpiece. An effective quantity of activated pulverous carbon particles is suspended at least in the anode compartment of the electrolysis cell, which cell is in communication with an etching chamber in such a way so as to allow circulating flow of solution.

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