ISO INTERNATIONAL STANDARD 12984 Second edition 2018-02-01 Carbonaceous materials used in the production of aluminium Calcined coke Determination of particle size distribution Produits carbonesutiliséspour laproduction de I'aluminium-Coke calciné-Déterminationdelagranulometrie Reference number ISO 12984:2018(E) ISO @ IS0 2018 IS0 2018, Published in Switzerland All rights reserved. Unless otherwise specified, 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ii @ ISo 2018 - All rights reserved Contents Page Foreword ..iv 1 Scope ..1 2 Normative references 3 Terms and definitions 4 Principle 5 Apparatus. 6 Sampling andpreparation oftestportion ..2 ..2 7 Procedure. 8 Expression of results ..3 9 Precision 2. 9.1 Repeatability ..4 9.2 Reproducibility 4 10 Test report .4 @IS0 2018-All rights reserved ili