ISO/TS 14423:1999

Carbonaceous materials used in the production of aluminium — Cold-ramming pastes — Determination of effective binder content and aggregate content by extraction with quinoline, and determination of aggregate size distribution

Produits carbonés utilisés pour la production de l'aluminium — Pâtes de brasquage à froid — Détermination de la teneur effective en liant et en aggrégats par extraction à la quinoléine, et détermination de la granulométrie

General Information

• Status: Withdrawn
• Publication Date: 06-Oct-1999
• Withdrawal Date: 06-Oct-1999
• ICS: 71.100.10 - Materials for aluminium production
• Technical Committee: ISO/TC 226 - Materials for the production of primary aluminium
• Drafting Committee: ISO/TC 226/WG 2 - Cathodes and ramming paste
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 30-Nov-2016

Standards Content (Sample)

TECHNICAL ISO/TS
SPECIFICATION 14423
First edition
1999-10-01
Carbonaceous materials used in the
production of aluminium — Cold-ramming
pastes —Determination of effective binder
content and aggregate content by
extraction with quinoline, and
determination of aggregate size distribution
Produits carbonés utilisés pour la production de l'aluminium — Pâtes de
brasquage à froid — Détermination de la teneur effective en liant et en
aggrégats par extraction à la quinoléine, et détermination de la
granulométrie
Reference number
ISO/TS 14423:1999(E)
©
ISO 1999

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ISO/TS 14423:1999(E)
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ISO/TS 14423:1999(E)
Contents Page
Foreword.iv
Introduction.v
1 Scope .1
2 Normative references .1
3 Principle.1
4 Terms and definitions .2
5 Reagents.2
6 Apparatus .2
7 Sampling.3
8 Preparation of test portion.3
9 Procedure .3
10 Calculation and expression of results.4
10.1 Effective binder content.4
10.2 Aggregate content .4
10.3 Aggregate particle-size distribution .4
11 Precision.4
12 Test report .4
© ISO 1999 – All rights reserved iii

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ISO/TS 14423:1999(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
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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.
The main task of technical committees is to prepare International Standards. 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.
In other circumstances, particularly when there is an urgent market requirement for such documents, a technical
committee may decide to publish other types of normative document:
� an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an
ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the
parent committee casting a vote;
� an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a
vote.
An ISO/PAS or ISO/TS is reviewed every three years with a view to deciding whether it can be transformed into an
International Standard.
Attention is drawn to the possibility that some of the elements of ISO/TS 14423 may be the subject of patent rights.
ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TS 14423 was prepared by Technical Committee ISO/TC 47, Chemistry, Subcommittee SC 7, Aluminium
oxide, cryolite, aluminium fluoride, sodium fluoride, carbonaceous products for the aluminium industry.
iv © ISO 1999 – All rights reserved

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ISO/TS 14423:1999(E)
Introduction
In order to determine the particle-size distribution of the aggregate used in cold-ramming pastes, it is necessary to
obtain the aggregate in a binder-free state. The most practicable way to achieve this is by extraction of the binder
by a suitable solvent, and the most effective common solvent for coal-tar and bituminous binders is quinoline. Most
coal tars are not totally soluble in quinoline, but have a small content of insoluble matter which principally
comprises infusible solid carbonaceous particles smaller than approximately 50�m. This insoluble matter is
effectively part of the solid aggregate of the cold-ramming paste and is measured as such by this method. The
effective binder is defined as that proportion of the product which is soluble in quinoline.
Although quinoline is the most effective common solvent for the present purpose, it has the disadvantage of being
expensive and of having a high boiling point which makes the removal of the last traces from the extracted residue
difficult by normal drying processes. However, when the most complete separation of the binder from the aggregate
is required, e.g. for referee purposes, quinoline is the solvent of choice, and the method given in this Technical
Specification should be employed.
NOTE The procedure described in this Technical Specification utilizes dichloromethane, but only to remove residual traces
of quinoline solvent from filters prior to oven drying.
© ISO 1999 – All rights reserved v

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TECHNICAL SPECIFICATION ISO/TS 14423:1999(E)
Carbonaceous materials used in the production of aluminium —
Cold-ramming pastes — Determination of effective binder content
and aggregate content by extraction with quinoline, and
determination of aggregate size distribution
1 Scope
This Technical Specification describes a method for determining the content and particle-size distribution of the
solid aggregate component, and also for determining the effective binder content, of cold-ramming pastes used in
aluminium manufacture.
The method is applicable to cold-ramming pastes made with coal-tar or bituminous binders but not applicable to
resin-based binders.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this Technical Specification. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this Technical Specification are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition
...