| 简介 |
Disclosed is a method to reduce rare earth elements. More specifically, the present invention provides a method capable of obtaining rare earth elements with a high recovery rate by recovering rare earth metals reduced from inside the fused salt. According to an embodiment of the present invention, the method to reduce rare earth elements comprises : a step of manufacturing fused salt electrolytes by charging rare earth chlorides or chloride additives in an electrolytic bath; a step of reducing rare earth elements by applying electric energy to fused salt electrolytes; a step of removing an electrode from fused salt electrolytes wherein rare earth elements are reduced; a step of obtaining solidified substance by cooling and solidifying fused salt electrolytes from which an electrode is removed; a step of dissolving the solidified substance in a rare earth element selective solvent; and a step of separating and collecting rare earth elements in the solidified substance using a filter.(S10) Produce molten salt electrolytic solution by charging rare earth elements chlorides and chloride additives in an electrolysis bath(S20) Reduce rare earth elements by applying electrical energy to molten salt electrolytic solution(S30) Remove an electrode from molten salt electrolytic solution with reduced rare earth elements(S40) Obtain solidified matters through solidification by cooling molten salt electrolytic solution with electrode removed(S50) Dissolve solidified matter in a rare earth element selective solvent(S60) Separate and collect rare earth elements in the solidified matter using a filterCOPYRIGHT KIPO 2016 |
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