METHOD AND SYSTEM FOR RECOVERING RARE EARTH ELEMENTS FROM WITHIN AN OBJECT

• Main Authors: NACHBAUR VIRGINIE, MAAT NICOLAS, LE BRETON JEAN-MARIE
• Format: Patent
• Language: Chinese; English
• Published: 23.10.2018
• Subjects: CHEMISTRY; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; DISPOSAL OF SOLID WASTE; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

The invention relates to a method and system for recovering at least rare earth elements from within an object A consisting of at least one first rare earth portion or a mixture of rare earth elementsand a second metal portion. The invention is characterized in that it comprises a solvothermal treatment step that places the object in contact with a fluid for causing at least one rare earth portion and/or mixture of rare earth elements and the metal portion to oxidize in order to separate same, the value of the reaction temperature Tr is selected according to the nature of the object, the reaction following a R-M<rightwards arrow>R(X)x+M(X)y scheme, where R is the rare earth element or a mixture of rare earth elements, M is the transition metal, and (X) is a group which depends on the fluid used. 本发明涉及种用于至少回收稀土元素的方法和系统，稀土元素包含在由至少个第稀土部分或稀土元素混合物以及第二金属部分组成的物体A中。本发明的特征在于，其包括溶剂热处理步骤，该步骤通过使所述物体与用于使所述至少个稀土部分和/或稀土元素混合物及所述金属部分氧化的流体相接触而将其分离，反应温度Tr的值根据所述物体的性质选择，所述反应遵循如下方式：R-MR(X)x+M(X)y，其中，R为所述稀土元素或稀土元素混合物，M为过渡金属，(X)为取决于