Coke (nominal top size greater than 20 mm) -- Size analysis by sieving

Specifies a method for the size analysis of coke, of nominal top size greater than 20 mm, by manual sieving.

Coke (dimension supérieure nominale supérieure à 20 mm) -- Analyse granulométrique par tamisage

Koks (nazivna zrnatost nad 20 mm) - Določanje zrnatosti s sejalno analizo

General Information

Status
Replaced
Publication Date
18-Oct-1995
Withdrawal Date
18-Oct-1995
Technical Committee
Drafting Committee
Current Stage
9599 - Withdrawal of International Standard
Completion Date
19-Oct-1995

RELATIONS

Effective Date
23-Apr-2020

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ISO 728:1995 - Coke (nominal top size greater than 20 mm) -- Size analysis by sieving
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INTERNATIONAL
STANDARD
Third edition
1995-11-01
Coke (nominal top size greater than
20 mm) - Size analysis by sieving
Coke (dimension suphieure nominale supbrieure a 20 mm) - Analyse
granubm&rique par tamisage
Reference number
ISO 728:1995(E)
---------------------- Page: 1 ----------------------
ISO 728:1995(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. Esch 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
(1 EC) on all matters of electrotechnical standardization.
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.
International Standard ISO 728 was prepared by Technical Committee
lSO/TC 27, Solid mineral fuels, Subcommittee SC 3, Coke.
This third edition cancels and replaces the second edition
(ISO 728:1981), which has been technically revised.
Annex A of this International Standard is for information only.
0 ISO 1995

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced

or utilized in any form or by any means, electronie or mechanical, including photocopying and

microfilm, without Permission in writing from the publisher.
International Organization fo r Standa rdization
Case Postale 56 l CH-1 21 Geneve 20 l Switzerland
Printed in Switzerland
---------------------- Page: 2 ----------------------
ISO 728:1995(E)
INTERNATIONAL STANDARD 0 ISO
- Size
Coke (nominal top size greater than 20 mm)
analysis by sieving
1 Scope 4 Apparatus
This International Standard specifies a method for the
4.1 Test sieves, complying with ISO 3310-2. The
size analysis of Coke, of nominal top size greater than
set of sieves used shall have exclusively round holes
20 mm, by manual sieving.
or exclusively Square holes.
NOTE 1 The test sieves should be selected according to
2 Normative references
the requirements of the test and the characteristics of the
Sample. If possible, the series of sieves should be selected
The following Standards contain provisions which,
so that the mass of coke in any size fraction does not ex-
through reference in this text, constitute provisions
ceed 25 % of the total mass of Sample being sieved. For
of this International Standard. At the time of publi-
ungraded Coke, a series of test sieves of nominal hole sizes
cation, the editions indicated were valid. All Standards
125 mm; 100 mm; 80 mm; 71 mm; 63 mm; 50mm;

are subject to revision, and Parties to agreements 40 mm; 31,5 mm; 20 mm and 10 mm may be suitable. For

samples containing pieces with a particle size greater than
based on this International Standard are encouraged
125 mm, Single-hole gauges may be used instead of test
to investigate the possibility of applying the most re-
sieves. For graded Coke, a series of test sieves of nominal
cent editions of the Standards indicated below.
hole sizes 50 mm; 45 mm; 40 mm; 35,5 mm; 31,5 mm;
Members of IEC and ISO maintain registers of cur-
25 mm; 20 mm; 16 mm; 10 mm; 5,6 mm and 2,8 mm may
rently valid International Standards.
be suitable.
ISO 579:1981, Coke - Determination of total moist-
lt is important to check the sieves from time to time, using
ure con ten t. the methods described in ISO 3310-2, to ensure that the
hole dimensions are within the specified tolerantes. Worn
or damaged sieves tan give rise to serious errors in size
ISO 1213-2: 1992, Solid mineral fuels - Vocabulary
analysis and should be discarded.
- Part 2: Terms rela ting to sampling, testing and
analysis.
4.2 Weighing machine, capable o measuring the
ISO 2309:1980, Coke - Sampling.
mass of the Sample to be sieved to the nearest
0,l %.
ISO 331 O-2: 1990, Test sieves - Technical require-
ments and testing - Part 2: Test sieves of perforated
me tal pla te.
5 Sampling and preparatior of test
Sample
3 Definitions
Take two gross samples for physical testing in ac-

For the purposes of this International Standard, the cordante with ISO 2309Y Prepare one of these sam-

definitions given in ISO 1213-2 apply. ples for the determination of moisture content in

1) In due course, ISO 2309 will be replaced by ISO 13909-6, Hard coal and Coke - Sampling - Part 6: Coke - Reparation

of test samples.
---------------------- Page: 3 ----------------------
0 ISO
ISO 728:1995(E)
accordance with ISO 2309 and carry out the determi-
6.4 If necessary, re-Stack the sieves and repeat the
nation in accordance with ISO 579.
Steps described in 6.2 and 6.3 for successive portions
until the entire test Sample has been sized and each
If the moisture content is higher than 5 % (m/m), dry
size fraction has been collected in a separate con-
the other Sample sufficiently to reduce the moisture
tainer.
content to lower than 5 % (m/m). Use this second
Sample for the remainder of the test.
6.5 Either weigh each Container separately with its
size fraction and subtract the respective tare mass,
or, after weighing the first fraction, successively add
6 Procedure
the other fractions and note the cumulative mass after
each addition.
6.1 Arrange the set of sieves (4.1) in a Stack in Order
NOTE 3
...

SLOVENSKI STANDARD
SIST ISO 728:1998
01-maj-1998
.RNV QD]LYQD]UQDWRVWQDGPP 'RORþDQMH]UQDWRVWLVVHMDOQRDQDOL]R
Coke (nominal top size greater than 20 mm) -- Size analysis by sieving

Coke (dimension supérieure nominale supérieure à 20 mm) -- Analyse granulométrique

par tamisage
Ta slovenski standard je istoveten z: ISO 728:1995
ICS:
75.160.10 Trda goriva Solid fuels
SIST ISO 728:1998 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 728:1998
---------------------- Page: 2 ----------------------
SIST ISO 728:1998
INTERNATIONAL
STANDARD
Third edition
1995-11-01
Coke (nominal top size greater than
20 mm) - Size analysis by sieving
Coke (dimension suphieure nominale supbrieure a 20 mm) - Analyse
granubm&rique par tamisage
Reference number
ISO 728:1995(E)
---------------------- Page: 3 ----------------------
SIST ISO 728:1998
ISO 728:1995(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. Esch 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
(1 EC) on all matters of electrotechnical standardization.
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.
International Standard ISO 728 was prepared by Technical Committee
lSO/TC 27, Solid mineral fuels, Subcommittee SC 3, Coke.
This third edition cancels and replaces the second edition
(ISO 728:1981), which has been technically revised.
Annex A of this International Standard is for information only.
0 ISO 1995

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced

or utilized in any form or by any means, electronie or mechanical, including photocopying and

microfilm, without Permission in writing from the publisher.
International Organization fo r Standa rdization
Case Postale 56 l CH-1 21 Geneve 20 l Switzerland
Printed in Switzerland
---------------------- Page: 4 ----------------------
SIST ISO 728:1998
ISO 728:1995(E)
INTERNATIONAL STANDARD 0 ISO
- Size
Coke (nominal top size greater than 20 mm)
analysis by sieving
1 Scope 4 Apparatus
This International Standard specifies a method for the
4.1 Test sieves, complying with ISO 3310-2. The
size analysis of Coke, of nominal top size greater than
set of sieves used shall have exclusively round holes
20 mm, by manual sieving.
or exclusively Square holes.
NOTE 1 The test sieves should be selected according to
2 Normative references
the requirements of the test and the characteristics of the
Sample. If possible, the series of sieves should be selected
The following Standards contain provisions which,
so that the mass of coke in any size fraction does not ex-
through reference in this text, constitute provisions
ceed 25 % of the total mass of Sample being sieved. For
of this International Standard. At the time of publi-
ungraded Coke, a series of test sieves of nominal hole sizes
cation, the editions indicated were valid. All Standards
125 mm; 100 mm; 80 mm; 71 mm; 63 mm; 50mm;

are subject to revision, and Parties to agreements 40 mm; 31,5 mm; 20 mm and 10 mm may be suitable. For

samples containing pieces with a particle size greater than
based on this International Standard are encouraged
125 mm, Single-hole gauges may be used instead of test
to investigate the possibility of applying the most re-
sieves. For graded Coke, a series of test sieves of nominal
cent editions of the Standards indicated below.
hole sizes 50 mm; 45 mm; 40 mm; 35,5 mm; 31,5 mm;
Members of IEC and ISO maintain registers of cur-
25 mm; 20 mm; 16 mm; 10 mm; 5,6 mm and 2,8 mm may
rently valid International Standards.
be suitable.
ISO 579:1981, Coke - Determination of total moist-
lt is important to check the sieves from time to time, using
ure con ten t. the methods described in ISO 3310-2, to ensure that the
hole dimensions are within the specified tolerantes. Worn
or damaged sieves tan give rise to serious errors in size
ISO 1213-2: 1992, Solid mineral fuels - Vocabulary
analysis and should be discarded.
- Part 2: Terms rela ting to sampling, testing and
analysis.
4.2 Weighing machine, capable o measuring the
ISO 2309:1980, Coke - Sampling.
mass of the Sample to be sieved to the nearest
0,l %.
ISO 331 O-2: 1990, Test sieves - Technical require-
ments and testing - Part 2: Test sieves of perforated
me tal pla te.
5 Sampling and preparatior of test
Sample
3 Definitions
Take two gross samples for physical testing in ac-

For the purposes of this International Standard, the cordante with ISO 2309Y Prepare one of these sam-

definitions given in ISO 1213-2 apply. ples for the determination of moisture content in

1) In due course, ISO 2309 will be replaced by ISO 13909-6, Hard coal and Coke - Sampling - Part 6: Coke - Reparation

of test samples.
---------------------- Page: 5 ----------------------
SIST ISO 728:1998
0 ISO
ISO 728:1995(E)
accordance with ISO 2309 and carry out the determi-
6.4 If necessary, re-Stack the sieves and repeat the
nation in accordance with ISO 579.
Steps described in 6.2 and 6.3 for successive portions
until the entire test Sample has been sized and each
If the moisture content is higher than 5 % (m/m), dry
size fraction has been collected i
...

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