A MECHANISM FOR THE ELECTROCHEMICAL WITHDRAWING CUPRUM (II) IONS FROM USED SOLUTIONS OF COPPER ETCHING

摘要

A mechanism for the electrochemical withdrawing cuprum (II) ions from used solutions of copper etching involves bath divided by ion exchange membrane, at that one part of the bath is equipped with cathode bar having cathode, and the second part is equipped with anode bar and insoluble anode. Additionally it contains disposed below the cathode tray of non-current-conductive, acid-resistant material the internal part of which is covered with sheet copper with fixed conductor for connecting to the direct current voltage source.