ISO INTERNATIONAL STANDARD 15968 Secondedition 2016-02-01 Direct reduced iron Determination of apparent density and water absorption of hot briquetted iron (HBI) Minerais de fer prereduits - Determination de la masse volumique apparente et de I'absorption d'eau du fer briqueté a chaud Reference number IS0 15968:2016(E) SO International Organization for Standardization @ IS0 2016 HEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS underI ted without license from IHS IS0 15968:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,PublishedinSwitzerland 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. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Intenationaibr PrganizationforStandardization ensee-ZHEJIANG INSTOF STANDARDIzARoISQ16- All rights reserved Not for Resale, 2016/3/29 02:49:21 etworking permitted without license from IHS IS0 15968:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Principle .1 5 Sample, samplepreparation and preparation oftestportions 5.1 Sampling and sample preparation :1 5.2 Preparation of test portions. ..1 6 Apparatus .2 6.1 General .2 7 Procedure .3 7.1 Number of determinations for the test .3 7.2 Density determination .3 8 Expression of results .3 8.1 Calculation of the apparent density (pa) .3 8.2 Calculation of the water absorption (a) .4 8.3 Repeatability and acceptance of test results ..4 9 Test report. ..4 7 Verification ..5 Annex A (normative) Flowsheet of the procedure for the acceptance of test results 7 iii ZHEJIANG INST OF STANDARDIZATION C15956617 vided by IHS underI thout license from IHS