BS ISO BRITISH STANDARD 2597-1:2006 Iron ores Determination of total iron content - Part l: Titrimetric method after tin(II) chloride reduction ICS 73.060.10 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BS ISO 2597-1:2006 National foreword This British Standard reproduces verbatim IS0 2597-1:2006 and implements it as the UK national standard. It supersedes BS ISO 2597-1:1994 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/58, Iron ores, 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 i to v, a blank page, pages 1 to 13 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 Date Comments published under the authority Amd. No. of the Standards Policy and Strategy Committee on 31 May 2006 BSI 2006 ISBN 0580 483878 BSIS02597-1:2006 INTERNATIONAL ISO STANDARD 2597-1 Second edition 2006-05-01 Iron ores Determination of total iron content - Part 1: Titrimetric method after tin(ll) chloride reduction Mineraisdefer-Dosagedufertotal- Partie 1: Methode titrimetrique apres reduction au chlorure d'etain(ll) Reference number ISO 2597-1:2006(E) ii BS ISO 2597-1:2006 Contents Page Foreword. iv Introduction. 1 Scope 2 Normative references ... 3 Principle 2 4 Reagents. 2 5 Apparatus 6 Sampling and samples... 6.1 Laboratory sample.... 6.2 Preparation of test samples..... 4 6.2.1 Oreshavingsignificantcontentsof combinedwateroroxidizablecompounds.... 6.2.2 Ores outside the scope of 6.2.1..... 7 Procedure... 7.1 Number of determinations... 7.2 7.3 Determination of hygroscopic moisture content...... 7.4 Blank test and check test... 7.5 Determination.... 7.5.1 Decompositionof thetest portion.... 7.5.2 Reduction... 7.5.3 Titration.. 7.5.4 Blanktest. 8 Expression of results .. 8.1 Calculationoftotal ironcontent....... 8.2 General treatment of results.. 8.2.1 Repeatability and permissible tolerance... 8.2.2 Determination of analytical result.... 8.2.3 Between-laboratoriesprecision.. 8 8.2.4 Checkfortrueness..... 8.2.5 Calculation of final result.. 10 8.3 Oxide factors in percent.... 10 9 Test report. 10 Annex A (normative)Flowsheet fortheprocedureforthe acceptance ofanalyticalvalues fortest 11 AnnexB(informative)Derivationofprecisionstatements..... 12 Annex C (informative)Decontamination of the waste solutions from the analysis ..... 13 ili BSISO2597-1:2006 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 beer 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