JPS6421022A - Method for recovering neodymium from neodymium-containing alloy scrap - Google Patents

Method for recovering neodymium from neodymium-containing alloy scrap

Info

Publication number
JPS6421022A
JPS6421022A JP17478587A JP17478587A JPS6421022A JP S6421022 A JPS6421022 A JP S6421022A JP 17478587 A JP17478587 A JP 17478587A JP 17478587 A JP17478587 A JP 17478587A JP S6421022 A JPS6421022 A JP S6421022A
Authority
JP
Japan
Prior art keywords
neodymium
ndf3
precipitate
scrap
nh4hf2
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17478587A
Other languages
Japanese (ja)
Inventor
Yasuhide Matsumoto
Ichita Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Showa Denko KK filed Critical Showa Denko KK
Priority to JP17478587A priority Critical patent/JPS6421022A/en
Publication of JPS6421022A publication Critical patent/JPS6421022A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE:To recover Nd in the form of fluoride in high yield, by dissolving Nd-Fe alloy scrap in a strong acid, filtering out insoluble substances, adding HF, NH4HF2, etc., to the filtrate to precipitate NdF3, and subjecting the resulting precipitate to separation by filtration and then to drying. CONSTITUTION:The scrap of an Nd-Fe alloy produced in a process for manufacturing an Nd-Fe-type permanent magnet is dissolved in a 4-5N strong hydrochloric acid, and then insoluble substances such as abrasives are separated by filtration. The filtrate is poured into a vessel free from attack by F and, after the liquor temp. is raised to 80-95 deg.C, an F source such as HF and NH4HF2 is added by the quantity 1.0-1.2 times the theoretical amount required for NdF3 formation to precipitate NdF3. The resulting precipitate is washed with water, neutralized, if necessary, by the addition of alkali, and then dried and burnt, by which Nd can be recovered in high yield.
JP17478587A 1987-07-15 1987-07-15 Method for recovering neodymium from neodymium-containing alloy scrap Pending JPS6421022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17478587A JPS6421022A (en) 1987-07-15 1987-07-15 Method for recovering neodymium from neodymium-containing alloy scrap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17478587A JPS6421022A (en) 1987-07-15 1987-07-15 Method for recovering neodymium from neodymium-containing alloy scrap

Publications (1)

Publication Number Publication Date
JPS6421022A true JPS6421022A (en) 1989-01-24

Family

ID=15984627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17478587A Pending JPS6421022A (en) 1987-07-15 1987-07-15 Method for recovering neodymium from neodymium-containing alloy scrap

Country Status (1)

Country Link
JP (1) JPS6421022A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362459A (en) * 1993-05-17 1994-11-08 Pure-Etch Co. Neodymium recovery process
WO1996000698A1 (en) * 1994-06-28 1996-01-11 Pure Etch Co. Rare earth recovery process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362459A (en) * 1993-05-17 1994-11-08 Pure-Etch Co. Neodymium recovery process
WO1996000698A1 (en) * 1994-06-28 1996-01-11 Pure Etch Co. Rare earth recovery process

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