BSISO4696-2:2015 BSI Standards Publication Licensedcopy:Heriot-Watt,Heriot-WattUniversityLibrary,Versioncorre Iron ores for blast furnace feedstocks Determination oflow-temperature reduction- disintegration indices by static method Part 2: Reduction with CO and N2 bsi. ..making excellence a habit. BSISO4696-2:2015 BRITISHSTANDARD National foreword This British Standard is the UK implementation of ISO4696-2:2015.It supersedes BS ISO 4696-2:2007 which is withdrawn. The UK participation in its preparation was entrusted to Technical CommitteeISE/58,Ironores. A list of organizations represented on this committeecanbe obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. TheBritishStandards Institution2015.PublishedbyBSIStandards Limited 2015 ISBN9780580792854 ICS73.060.10 Compliancewitha British Standard cannot confer immunityfrom legal obligations. This British Standard was published under the authority of the Standards PolicyandStrategyCommitteeon31August2015 Amendments issued sincepublication Date Text affected BS ISO 4696-2:2015 INTERNATIONAL ISO STANDARD 4696-2 Third edition 2015-09-01 Licensed copy:Heriot-Watt, Heriot-Watt University Library,Version correct as of 01/05/2016 Ironoresforblastfurnace feedstocksDeterminationoflow- temperature reduction-disintegration indices by static method - Part 2: Reduction with CO and N2 Mineraisdeferpourchargesdehautsfourneaux-Determination desindicesdedésagregationparreductionabassetemperaturepar methodestatique- Partie2:RéductionavecCOetN2 Reference number IS0 4696-2:2015(E) iso @IS02015 BSISO4696-2:2015 IS04696-2:2015(E) COPYRIGHTPROTECTEDDOCUMENT ISo2015,Published inSwitzerland 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 writtenpermission.PermissioncanberequestedfromeitherIsOattheaddressbeloworIso'smemberbodyinthecountryof the requester. ISOcopyrightoffice Ch.de Blandonnet 8·CP 401 CH-1214Vernier,Geneva, Switzerland Tel. +41 22 749 0111 Fax+41227490947 [email protected] www.iso.org ii IS0 2015-All rights reserved BSISO4696-2:2015 IS04696-2:2015(E) Contents Page Foreword .iv Introduction. .V 1 Scope. 1 2 Normative references .1 3 Terms and definitions .1 Principle 4 5 Sampling,samplepreparationandpreparationoftestportions 2 5.1 Samplingandsamplepreparation 2 5.2 Preparationoftestportions 2 6 Apparatus. .2 6.1 General 2 7 Test conditions .3 7.1 General. 3 7.2 Reducinggas 3 7.2.1 Composition 3 7.2.2 Purity 3 7.2.3 Flowrate .4 7.3 Heating and cooling gas 4 7.4 Temperatureofthetestportion .4 8 Procedure 4 8.1 Numberofdeterminationsforthetest 4 8.2 Reduction 4 Tumbling 8.3 4 8.4 Sieving .5 9 Expressionofresults .5 Calculation of the reduction-disintegration index (RDI-2-2,8) 9.1 5 9.2 Repeatabilityandacceptanceoftestresults .5 10 Test report. 6 11 Verification .6 AnnexA (normative)Flowsheetof theprocedurefortheacceptanceoftestresults .10 @IS0 2015-All rights reserved ili BS ISO 4696-2:2015 IS04696-2:2015(E) Foreword Iso(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandards bodies (Iso member bodies).The work of preparing International Standards is normally carried out throughIsotechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical committee has been established has the right to berepresented on that committee.International organizations,governmentaland non-governmental,inliaisonwithIso,alsotakepart inthework. ISocollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersof electrotechnicalstandardization. /S0/ The procedures used to develop this document and those intended for itsfurther maintenance are described intheISO/IEC Directives,Part 1.In particular the differentapproval criteria n