Causes of the stray current corrosion in inlet and outlet of the electrolytic bath were analyzed to put forward a solution.

Using the wasted cyanic copper-plating bath and electrolytic tank of new type designed by ourselves, to approach varieties of factors influencing upon the effect of de-cyaniding.

As the part of application research of the thesis, an advanced control system combined with optimization, GPC and feedforward is designed for the project of ion exchange membrane electrolytic bath.