Method and apparatus for recovery of rare earth element
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United States of America Patent
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Dec 4, 2012
Grant Date -
Feb 3, 2011
app pub date -
Mar 26, 2009
filing date -
Mar 26, 2008
priority date (Note) -
Expired
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Abstract
Disclosed is a method for recovering a rare earth element from a rare earth alloy, which has improved extraction efficiency of the rare earth element from the rare earth alloy, and is applicable to the extraction of various rare earth elements. The method is characterized by comprising a step of immersing the rare earth alloy in a molten salt of a halide salt to cause the elution of a halide of the rare earth element into the molten salt, or a step of reacting a rare earth alloy scrap which coexists with at least one of Fe and Cu with a metal chloride gas at a temperature of 1300 to 1800K to selectively extract the rare earth element contained in the rare earth alloy scrap as a vapor of a chloride of the rare earth element.
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