BS ISO BRITISH STANDARD 17500:2006 Aluminium oxide used for the production of primary aluminium - Determination of attrition index - ICS 71.100.10 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BS ISO17500:2006 National foreword ThisBritish Standard reproduces verbatim IS017500:2006 and implements it as theUK national standard. The UK participation in its preparation was entrusted to Technical Committee CII/24, Raw materials for the aluminium industry, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the“Search" facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the IsO title page, pages ii to v, a blank page, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued sincepublication This British Standard was Amd. No. Date Comments published under the authority of the Standards Policy and Strategy Committee on31July2006 @ BSI 2006 ISBN0580488659 BSIS017500:2006 INTERNATIONAL ISO STANDARD 17500 First edition 2006-04-01 Aluminium oxide used fortheproduction of primary aluminium Determination of attrition index Oxyded'aluminiumutilisepourlaproductiondeIaluminiumprimaire DeterminationdeI'indexd'attrition Reference number ISO 17500:2006(E) ii BSISO17500:2006 Contents Page Foreword iv Introduction 1 Scope 2 Normativereferences... 3 Principle. 4 Apparatus. 5 Sample handling and preparation... 5.1 Referencealumina.. 5.2 Test sample.... 6 Procedure 6.1 Flow calibration... 6.2 Attrition procedure fortest sample and reference alumina.. 6.3 Particle size distribution analysis. 7 Calculationandreportingof results 8 Precision.. 6 Quality control.. 10 Test report Annex A(informative)Results oftestprogramme. Bibliography ili BSIS017500:2006 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization 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 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO17500was prepared by Technical Committee ISO/TC 226,Materials for the production of primary aluminium iv BSISO17500:2006 Introduction This International Standard is based on Australian method, AS 2879.10-2003, Alumina-Determination of attritionindex. The Attrition Index reference material ASCRM 025 was released in December 2003 by SAl Global, along with http://www.standards.com.au/ V