Anwendung von Radiotracern bei der Entwicklung hydrometallurgischer Verfahren zur Aufarbeitung von Sekundärrohstoffen der NE-Metallurgie mittels Flüssig-Flüssig-Extraktion

The selective separation of Cu, Zn and Mn from various liquid secondary raw materials has been studied by the use of radionuclides. The experimental equipment allowed the establishment of equilibrium in a mixer-settler to be continuously followed. The suitability of various industrial extractants such as LIX 64 N, Acorga P-17, Kelex 100, D 2 EHPA for the extraction of those non-ferrous metals from spent zinc electrolytes and from solutions obtained by leaching Cu/Zn scrap has been determined on the basis of a new selectivity criterion. Good results have been achieved by selecting the optimum extraction and reextraction conditions.