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Title:
METHOD FOR RECOVERING RARE-EARTH ELEMENT
Document Type and Number:
Japanese Patent JP2003073754
Kind Code:
A
Abstract:

To provide a method for efficiently and inexpensively recovering rare-earth elements with high purity from materials, particularly waste, containing the rare-earth elements and iron family elements.

The method for recovering the rare-earth elements from materials containing the rare-earth elements and the iron family elements, is characterized by steps of contacting the material containing the rare-earth element and the iron family element, such as scrap or sludge of the rare-earth magnet, with iron chloride in a vapor or molten state, making a chlorination reaction of the rare-earth element in the above material proceed, while keeping the metallic state for the iron family element in the above material, and selectively recovering the rare-earth element as chloride from the above material.


Inventors:
UDA TETSUYA
HIRASAWA MASAHIRO
Application Number:
JP2001310670A
Publication Date:
March 12, 2003
Filing Date:
August 30, 2001
Export Citation:
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Assignee:
UDA TETSUYA
HIRASAWA MASAHIRO
International Classes:
C22B59/00; C22B5/16; C22B7/00; C22B9/10; (IPC1-7): C22B59/00; C22B5/16; C22B7/00; C22B9/10