ISO INTERNATIONAL STANDARD 12980 First edition 2000-04-01 Carbonaceous materials used in the production of aluminium Green coke and calcined coke for electrodes Analysis using an X-ray fluorescence method Produits carbonés utilisés pour la production de I'aluminium Coke calciné et coke cru pour électrodes - Analyse par fluorescence aux rayons X Reference number ISO 12980:2000(E) ISO @ ISO 2000 py IHS under ted without license from IHS Not for Resale ISO 12980:2000(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The IsO Central Secretariat accepts no liability in this area. Adobe is a trademarkof Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event @ISO2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail [email protected] Web www.iso.ch Printed in Switzerland @ IsO 2000-All rights reserved py IHS unde ermittedwithoutlicense from IHS Not for Resale ISO 12980:2000(E) Contents Page Foreword. Introduction Scope 2 Normative reference. 3 Principle. 4 Apparatus and materials.... 5 Sampling and test specimen preparation 6 Procedure. 7 Expression of results . 8 Precision. 9 Test report ii d by IHS under license with se from IHS Not for Resal ISO 12980:2000(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO committees. Each member body interested in a subject for which a technical committee has been established has liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of International Standard ISO 12980 was prepared by Technical Committee ISO/TC 47, Chemistry, Subcommittee sc 7, Aluminium oxide, cryolite, aluminium fluoride, sodium fluoride, carbonaceous products for the aluminium industry. IsO2000-All rightsreserved onal Organization for Standardizatior ISO 12980:2000(E) Introduction other materials are quite different it is intended that specific standard methods will be published for each material. V ng Not for Resale aadizao No reproductic neworkingmitedwithout licenefrmH Not for Resale INTERNATIONAL STANDARD ISO 12980:2000(E Carbonaceous materials used in the production of aluminium Green coke and calcined coke for electrodes Analysis using an X-ray fluorescence method Scope This International Standard specifies an X-ray fluorescence method for the determination of elemental impurities in green and calcined petroleum cokes used for the manufacture of anodes. These anodes are used in the production of aluminium. 2Normative reference this International Standard. For dated references, subsequent amendments to, or revisions of, any of these this publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated be