Rare earth metal, rare earth metal alloy and method of producing rare earth metal and rare earth metal alloy by molten salt electrolysis

摘要

[Problems] The present invention provides a process for producing rare earth metals, rare earth metals and rare earth metals by molten salt electrolysis and a rare earth metal alloy. By A molten salt electrolysis in a process for producing a rare earth metal alloys, alkali metal or chloride molten salt of an alkaline earth metal and the electrolyte, an inert electrode or graphite as an anode, an oxide of a rare earth metal and other oxides of the alloy components and / or metal powder cathode is created to perform the electrolysis through direct current electricity. In electrolysis, electrolysis temperature is higher than the melting point of the rare earth metal alloy to be produced, and lower than the melting point of the cathode becomes the metal of the liquid film by the surface layer of the cathode is first electrolysis, and after accumulating to a certain amount, bottom It falls into the crucible. The current density of the cathode is sufficient to deposit on the cathode rare earth metal alloy components, the electrolysis voltage is lower than the decomposition potential of the electrolyte is higher than the decomposition potential of oxides corresponding to each component in the rare earth metal alloy. Rare earth metal and alloy obtained by the method is a liquid, I collect crucible. According to the method, the process is simple, the power consumption is low, the current efficiency is high and the cost is low together, and environmentally friendly. .BACKGROUND