| 摘要 |
PCT No. PCT/JP96/03104 Sec. 371 Date Jun. 20, 1997 Sec. 102(e) Date Jun. 20, 1997 PCT Filed Oct. 24, 1996 PCT Pub. No. WO97/15701 PCT Pub. Date May 1, 1997A process for producing rare earth metals including the step of electrolyzing a starting material containing rare earth carbonates as main ingredients in a molten salt electrolytic bath containing rare earth fluorides, lithium fluoride, and barium fluoride at a bath temperature of 750 to 950 DEG C. while adjusting an anode potential to an electrolytic potential of fluorides. This method allows production of rare earth metals at a high current density and a high current efficiency, while ensuring prolongation of life time of an electrolytic cell and electrodes by performing the electrolysis at a lower bath temperature, and suppressing generation of toxic fluorine-containing gases.
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