SIST ISO 15968:2002

SLOVENSKI STANDARD
SIST ISO 15968:2002
01-januar-2002
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Direct reduced iron -- Determination of apparent density and water absorption of hot
briquetted iron (HBI)
Minerais de fer préréduits -- Détermination de la masse volumique apparente et de
l'absorption d'eau du fer briqueté à chaud
Ta slovenski standard je istoveten z: ISO 15968:2000
ICS:
73.060.10 Železove rude Iron ores
SIST ISO 15968:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ISO 15968:2002

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SIST ISO 15968:2002
INTERNATIONAL ISO
STANDARD 15968
First edition
2000-09-15
Direct reduced iron — Determination of
apparent density and water absorption of
hot briquetted iron (HBI)
Minerais du fer préréduits — Détermination de la masse volumique
apparente et de l'absorption d'eau du fer briqueté à chaud
Reference number
ISO 15968:2000(E)
©
ISO 2000

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SIST ISO 15968:2002
ISO 15968:2000(E)
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ii © ISO 2000 – All rights reserved

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SIST ISO 15968:2002
ISO 15968:2000(E)
Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Sampling and sample preparation.2
5 Test method.2
5.1 Principle.2
5.2 Apparatus and materials.2
5.3 Procedure .3
5.4 Expression of results .5
5.5 Number of tests and permissible tolerances.6
5.6 Test report .6
6 Verification .6
Annex A (normative) Operating procedure steps for the determination of apparent density of HBI .7
Annex B (normative) Flowsheet for the procedure for the acceptance of the test results .8
© ISO 2000 – All rights reserved iii

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SIST ISO 15968:2002
ISO 15968:2000(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards 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 International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 15968 was prepared by Technical Committee ISO/TC 102, Iron ore and direct reduced
iron, Subcommittee SC 5, Physical testing of direct reduction feedstock and DRI.
Annexes A and B form a normative part of this International Standard.
iv © ISO 2000 – All rights reserved

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SIST ISO 15968:2002
ISO 15968:2000(E)
Introduction
The international trade of hot briquetted iron (HBI) as a merchant commodity is increasing rapidly and is expected
to grow beyond 10 million tonnes per annum in the twenty-first century. This has led to the need for the
development of test method standards for HBI.
This International Standard specifies a method for the determination of the apparent density of HBI. The test gives
a measurement of apparent density which is useful as a test of briquetting machine performance, as a measure of
briquette quality, and may be used as part of a programme to certify that HBI meets the requirements of the
International Maritime Organization (IMO) Code of Safe Practice for Solid Bulk Cargoes.
© ISO 2000 – All rights reserved v

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SIST ISO 15968:2002

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SIST ISO 15968:2002
INTERNATIONAL STANDARD ISO 15968:2000(E)
Direct reduced iron — Determination of apparent density and
water absorption of hot briquetted iron (HBI)
CAUTION – This International Standard may involve hazardous materials, operations and equipment. This
International Standard does not purport to address all of the safety problems associated with its use. It is
the responsibility of the user of this International Standard to establish appropriate safety and health
practices and to determine the applicability of regulatory limitations prior to use.
1 Scope
This International Standard specifies a method for the determination of the apparent density and water absorption
of hot briquetted iron (HBI).
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
1)
ISO 3082:— , Iron ores — Sampling and sample preparation procedures.
ISO 3310-1:2000, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth.
ISO 3310-2:1999, Test sieves — Technical requirements and testing — Part 2: Test sieves of perforated metal
plate.
ISO 10835:1995, Direct reduced iron — Sampling and sample preparation — Manual methods for reduced pellets
and lump ores.
ISO 11323:1996, Iron ores — Vocabulary.
3 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in ISO 11323 and the following
apply.
3.1
open pores
those pores that are penetrated when immersed in water
3.2
closed pores
those pores that are not penetrated when immersed in water
1) To be published. (Revision of ISO 3082:1998)
© ISO 2000 – All rights reserved 1

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SIST ISO 15968:2002
ISO 15968:2000(E)
3.3
apparent density
�
a
mass of the dry material divided by the apparent volume (3.4) of the material
3.4
apparent volume
volume of the material, as given by the mass of water displaced by the material that has been previously saturated
in water
NOTE The apparent volume includes the volume of the solids, the volume of the open pores (3.1) and the closed pores
(3.2).
3.5
water absorpt
...