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Rare earth-iron-boron magnet from scrap recovery of useful material 发明授权

2023-10-03 2200 93K 0

专利信息

申请日期 2025-07-11 申请号 JP2008511018
公开(公告)号 JP5149164B2 公开(公告)日 2013-02-20
公开国别 JP 申请人省市代码 全国
申请人 Santoku Corporation176660
简介 A method of recovering useful materials from a scrap of a rare earth-iron-boron magnet by which iron and boron can be recovered as ferroboron from the rare earth-iron-boron magnet scrap and the rare earth element can be efficiently recovered as an oxide. The recovery method comprises : a step in which the rare earth-iron-boron magnet scrap is oxidized in an oxygen-containing atmosphere; a step in which a mixture for thermit reaction comprising the oxidized magnet scrap and aluminum and/or an aluminum alloy is prepared; a step in which the mixture for thermit reaction is caused to undergo thermit reaction in order to yield ferroboron and a slag; and a step in which the ferroboron and slag obtained by the thermit reaction are separated.


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