METHOD FOR PRODUCING METAL

文件类型：PDF文档
文件大小：119K
PROBLEM TO BE SOLVED : To provide a method for producing a metal, which can be applied to an electrolytic process for producing a metal such as calcium and a rare earth element. SOLUTION : The method for producing the metal through the electrolytic process employs a porous ceramic body containing yttria as a diaphragm 5. Then, calcium produced by electrolysis cannot pass through the diaphragm, and a reverse reaction can be effectively inhibited. The diaphragm is preferably made of the porous ceramic body which contains 90 mass% or more (more preferably 99% or more) yttria, contains 1% or more pores with diameters of 20 μm or smaller, and has a thickness of 0.05 to 50 mm. A metal halide is preferably used for an electrolytic bath. COPYRIGHT : (C)2006, JPO&NCIPI