USE OF REVERSE CHRONOPOTENTIETRY FOR THE PRODUCTION OF METALLIC CHEMICAL ELEMENTS OR ALLOYS THEREOF BY ELECTROLYTIC REDUCTION IN FILLED SALT MEDIA

摘要

The invention relates to the use of reverse chronopotentiometry to obtain a yield indicator of an electrolytic reduction in the metallic state of at least one chemical element chosen from rare earths and actinides, the electrolytic reduction being carried out in a medium of molten salts. It also relates to a reverse chronopotentiometry selection method of a set of operating conditions for the production in the metallic state of at least one chemical element chosen from rare earths and actinides, by electrolytic reduction in a reaction medium. melted salts, the operating conditions being the qualitative composition of the molten salt medium, the concentration of the chemical element in the molten salt medium, the temperature of the molten salt medium and the cathodic current density. It also relates to a method for the production in the metallic state of at least one chemical element chosen from rare earths and actinides, by electrolytic reduction in a molten salt medium, which comprises the implementation of said selection process. a set of operating conditions. It also relates to methods for producing neodymium and dysprosium in the metallic state by electrolytic reduction in molten salt media.