ISO INTERNATIONAL STANDARD 4700 Fourth edition 2015-08-01 Iron ore pellets for blast furnace and direct reduction feedstocks Determination of the crushing strength Boulettes de minerais de fer pour charges de hauts fourneaux et réduction directe - Détermination de la résistance a I'écrasement Reference number IS0 4700:2015(E) SO International Organization for Standardization @ IS0 2015 ng Institute of Sta andardization5956617 vided by IHS under I itted without license from IHS IS0 4700:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland 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 written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ganizationforStandardization Not for Resale, 2015/11/11 08:31:02 etworking permitted without license from IHS IS0 4700:2015(E) Contents Page Foreword ..iv Introduction. ... 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Principle ..1 5 Sampling, sample preparation and preparation of test portions 5.1 Sampling and sample preparation 1 5.2 Preparation of test portions. 6 Apparatus .2 7 Procedure ..2 7.1 Number of determinations for the test . 2 7.2 Load application .3 8 Expression of results 9 Test report ..4 10 Verification ..5 iii see=Zhejiang Institute of Standardization 5956617 vided by IHS under vithout license from IHS