| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a metal, which is a method of directly reducing a metal oxide with Ca, but has a high productivity, besides does not cause a carbon contamination in a formed metal due to CaO, and does not generate CO<SB>2</SB>from the production process. SOLUTION: This metal production method comprises: holding a molten salt containing CaCl<SB>2</SB>as a main component and Ca in a reducing chamber 1; charging the metal oxide into the molten salt in the reducing chamber 1, and reducing the metal oxide by Ca in the molten salt to form the metal; separating the metal formed in the molten salt from the molten salt by a separation unit 2; introducing the molten salt separated and removed from the metal into a chlorination chamber 7, chlorinating the molten salt with chlorine gas, and removing by-produced CaO in the molten salt; introducing the molten salt after having been chlorinated into an electrolysis chamber 8, and electrolyzing the molten salt to produce Ca and chlorine from CaCl<SB>2</SB>; transferring formed Ca or the molten salt containing the Ca from the electrolysis chamber 8 to the reducing chamber 1; and using chlorine obtained in the electrolysis chamber 8, in the chlorination chamber 7. COPYRIGHT: (C)2005,JPO&NCIPI
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