ISO INTERNATIONAL STANDARD 8005 Second edition 2005-10-01 Carbonaceous materials used in the production of aluminium Green and calcined coke Determination of ash content Produits carbonés utilisés pour la production de I'aluminium-Coke cru etcoke calcineDetermination dutaux de cendres Reference number ISO 8005:2005(E) LSO @ISO2005 ISO 8005:2005(E) PDF disclaimer 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 accepts no liability in this area. Adobe is a trademark of 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 the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO2005 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 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii ISO2005-All rights reserved ISO8005:2005(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeen non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75%of the member bodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 8005 was prepared by Technical Committee ISO/TC 226, Materials for the production of primary aluminium. This second edition cancels and replaces the first edition (IsO 8005:1984), which has been technically revised ISO2005All rights reserved ii ISO8005:2005(E) Introduction raw materials are used. iv @ISO2005-All rights reserved INTERNATIONALSTANDARD ISO8005:2005(E) Carbonaceous materials used in the production of aluminium Green and calcined coke Determination of ash content 1 Scope This International Standard specifies a method for the determination of ash in green and calcined coke used in the production of aluminium. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso6375,Carbonaceousmaterialsfor the productionofaluminium-Cokes forelectrodesSampling AsTM Practice E691-99, Standard Practice for Conducting an Interlaboratory Study to Determine the Precision ofa Test Method 3Principle mass. 4 Apparatus 4.1 Jaw crusher, or another suitable crusher, faced with a very hard alloy that will not be abraded and therefore will not contaminate the sample. 4.2 Pestle and mortar, or a suitable mill, of hard material that will not be abraded and therefore will not contaminate the sample. Suitable materials are agate, tungsten or silicon carbide. Porcelain should not be used. 4.3 Sieve, 750 μm. 4.4 Laboratory balance 4.5 Desiccator, containing a drying agent (e.g. activated alumina or molecular sieves). 4.6 Platinum dish, of capacity 50