Novel rare earth recovery process on Nd-Fe-B magnet scrap by selective chlorination using NH4Cl

被引：112

作者：

Itoh, Masahiro ^{[1
]}

Miura, Koji ^{[1
]}

Machida, Ken-ichi ^{[1
]}

机构：

[1] Osaka Univ, Ctr Adv Sci & Innovat, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 477卷 / 1-2期

关键词：

Rare earth magnets; Recovery; Chlorination; NH4Cl; Electromagnetic wave absorber; MICROWAVE-ABSORPTION; EXTRACTION; METALS; SLUDGE;

D O I：

10.1016/j.jallcom.2008.10.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Extraction of rare earth elements from the Nd-Fe-B magnet scraps through the chlorination with NH4Cl was performed to study the effective process for reusing metal iron as well as rare earths. The Nd2Fe14B primary phase was selectively converted to NdCl3 in ca. 90% yield, together with alpha-Fe and Fe-B solid residues by chlorinating at 573 K for 3 h. The resin compacts prepared from the resultant solid residues mainly composed of the alpha-Fe phase provided the good electromagnetic wave absorption properties. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：484 / 487

页数：4

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