Sep Gesellschaft Fur Technische Studien Entwicklung Planung Mbh

Rainer Huss

Werner Peters

The present invention provides a method for electrolytically recovering or inning pure metallic nickel from nickel sulfate-containing solution using an electrolysis cell having nickel electrodes. The cell has at least one anode space, at least one cathode space and a diaphragm disposed therebetween. Certain of the nickel electrodes are employed alternatively as anode electrodes and as cathode electrodes in the anode and cathode spaces, respectively, while maintaining other electrodes as fixed cathode electrodes in the cathode spaces for electro-winning of nickel. Nickel regenerated using the process of the present invention may be employed as anode material in nickel electroplating processes.

Process for electrolytic recovery of nickel from solution

A process for metal-coating plastic surfaces by chemical pretreatment with n acid pickling agent whereby to prepare the plastic surfaces for the subsequent superposition thereon of a metal layer is described. The plastic surfaces to be coated are chemically pretreated by means of an acid pickling agent in the gaseous phase, the chemical pretreatment is then terminated by chemical reaction of the said pickling agent with another material in the gaseous phase to form gaseous reaction products. If desired, the chemically pretreated plastic surface may then be treated with an aldehyde in solution. The treated surface may then be metal coated, if desired employing a galvanic process without external current.

Growing community of inventors

Kircheim, Germany

Rainer Huss