Rheinmetall Gmbh

Aeg-elotherm G.m.b.h.

Cohausz & Florack

Wilhelm Gotzelmann

Paul G Pott

Hans-Joachim Konietzni

Ulrich Borgs

The invention comprises a process for regenerating and detoxifying electrolytes which contain sodium nitrate for use in electrochemical treatment of metallic workpieces. The reaction products, like ammonia, formed in the treatment which interfere with the operating process and in some instances are toxic shall be removed as harmless substances. The process according to the invention is characterized by

Process for regenerating and detoxifying electrolytes used in the

The invention refers to a process for regenerating electrolytes containing sodium nitrate for use in the electrochemical working of metallic workpieces within the pH range from 4 to 12. Iron (III) nitrate is added to the electrolyte in the working cycle in such an amount that the hydrolysates are predominantly precipitated in coarse flocculent form. Flocculents may be added to the electrolyte.

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Stuttgart, Germany

Wilhelm Gotzelmann