METHOD OF SEPARATING, AT LEAST, ONE FIRST CHEMICAL E1 ELEMENT, AT LEAST, FROM ONE SECOND CHEMICAL E2 ELEMENT, INCLUDING USE OF THE ENVIRONMENT INCLUDING ITS DETERMINED

摘要

1. A method of separating at least one first chemical element E from at least one second chemical element E, together present in the mixture in the form of oxides, comprising the following stages: a) a step of dissolving the powder of one or more oxides of the specified at least one first chemical element E and a powder of one or more oxides of said at least one second chemical element Ev in an environment comprising at least one molten salt of the formula MF-AlF, where M is alkali full-time element, to obtain a mixture containing the above molten salt, the fluoride of the specified at least one first chemical element E and the fluoride of the specified at least one second chemical element E; b) the stage of contacting the mixture obtained in stage a) with the medium comprising metal in a liquid state, said metal being a reducing agent capable of predominantly reducing said at least one first chemical element E, in contrast to said at least one second of the chemical element Ec by producing a two-phase medium comprising a first phase called a metal phase, comprising the at least one first chemical element E of oxidation state 0, and a second phase called a salt phase, including a molten salt of the above formula MF-AlF and fluoride of the specified at least one second chemical element E.2. The method of claim 1, wherein the element (s) E are selected from the group consisting of actinides, transition elements, while the element (s) E is selected from the group not including actinides. The method of claim 2, wherein the element (s)