ISO 22928-1:2024

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 22928-1
ISO/TC 298
Rare earth — Analysis by wavelength
Secretariat: SAC
dispersive x-ray fluorescence
Voting begins on:
2023-10-23 spectrometry (WD-XRFS) —
Voting terminates on:
Part 1:
2023-12-18
Determination of composition of rare
earth magnet scrap using standardless
XRF commercial packages
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 22928-1:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 22928-1:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 22928-1
ISO/TC 298
Rare earth — Analysis by wavelength
Secretariat: SAC
dispersive x-ray fluorescence
Voting begins on:
spectrometry (WD-XRFS) —
Voting terminates on:
Part 1:
Determination of composition of rare
earth magnet scrap using standardless
XRF commercial packages
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 22928-1:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 22928-1:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Reagents . 2
5 Apparatus . 2
6 Determined elements and concentration ranges . 3
7 Handling recyclable magnet resources . 3
7.1 Dismantling EOL scrap . 3
7.1.1 General . 3
7.1.2 Dismantling of components containing rare earth
...

ISO/FDIS 22928-1:2023(E)
Date: 2023-09-04
ISO/TC 298
Secretariat: SAC
Date: 2023-10-09
Rare earth — Analysis by wavelength dispersive Xx-ray
fluorescence spectrometry (WD-XRFS) — —
Part 1:
Determination of composition of rare earth magnet scrap using
standardless XRF commercial packages
FDIS stage

© ISO 2023 – All rights reserved

---------------------- Page: 1 ----------------------
© ISO 2023 – All rights reserved
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO Copyright Office copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Email: copyright@iso.org
E-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland.

© ISO 2023 – All rights reserved ii

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ISO/DISFDIS 22928-1:2023(E)
Contents
Foreword . v
Introduction . vi
Part 1: Determination of composition of rare earth magnet scrap using standardless XRF commercial
packages . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Reagents . 2
5 Apparatus . 3
6 Determined elements and concentration ranges . 3
7 Handling recyclable magnet resources . 4
7.1 Dismantling EOL scrap. 4
7.1.1 General . 4
7.1.2 Dismantling of components containing rare earth magnets . 4
7.2 Demagnetization . 4
7.2.1 General . 4
7.2.2 Heat treatment . 5
7.2.3 Alternating magnetic fields . 5
7.3 Cleaning magnet scrap . 5
8 X-ray fluorescence analysis . 5
8.1 General .
...