The extraction of Nd from waste Nd-Fe-B alloys by the glass slag method

被引：91

作者：

Saito, T

Sato, H

Ozawa, S

Yu, J

Motegi, T

机构：

[1] Chiba Inst Technol, Dept Met Engn, Narashino, Chiba 2750016, Japan

[2] Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[3] Natl Space Dev Agcy Japan, Tsukuba Space Ctr, Tsukuba, Ibaraki 3058505, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2003年 / 353卷 / 1-2期

关键词：

transition metal alloys; rare earth alloys; permanent magnets;

D O I：

10.1016/S0925-8388(02)01202-1

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：

We report the use of molten slag materials to extract neodymium from waste Nd-Fe-B magnets. X-Ray diffraction and EPMA studies revealed that the Nd-Fe-B alloys produced by the glass slag method using boron trioxide consisted of alpha-Fe and Fe2B phases. No Nd-containing phase such as the Nd2Fe14B phase and the Nd oxide phase was found in the resultant alloys. The chemical analyses confirmed that the Nd content in the Nd-Fe-B alloys produced by the glass slag method was less than 0.01 wt.% Nd. On the other hand, the slag materials contained a large amount of neodymium. The Nd in the Nd-Fe-B alloys was successfully extracted by the glass slag method using boron trioxide. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：189 / 193

页数：5

共 18 条

[1] MAGNETIC-PROPERTIES OF COMPOUNDS R2FE14B [J].