ISO 10752:2019
(Main)Coal sizing equipment — Performance evaluation
Coal sizing equipment — Performance evaluation
This document describes the principles and methods for the expression of results of performance tests on sizing equipment used in coal preparation, and includes methods for the evaluation of performance parameters. Performance test procedures and size measurement techniques are recommended. This document applies to all types of sizing equipment, categorized as follows: — screens; — classifiers; — others. The procedure described in this document applies to two-product separations. Performance assessment of multiproduct separations can be achieved by consideration of a series of two-product separations.
Équipement pour la granulométrie du charbon — Évaluation de l'aptitude à l'emploi
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INTERNATIONAL ISO
STANDARD 10752
Second edition
2019-06
Coal sizing equipment — Performance
evaluation
Équipement pour la granulométrie du charbon — Évaluation de
l'aptitude à l'emploi
Reference number
©
ISO 2019
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General . 1
3.2 Performance parameters . 2
4 Performance criteria . 2
5 Performance parameters . 3
6 Performance test procedures . 3
7 Analytical procedures . 4
8 Evaluation and presentation of performance characteristics . 5
8.1 General . 5
8.2 Basic data . 5
8.3 Reconstituted feed size distribution . 5
8.4 Partition curve . 5
8.5 Partition size . 6
8.6 Sharpness of separation . 6
8.7 Misplaced material curves . 6
8.8 Misplaced material . 6
8.9 Equal errors size . 7
8.10 Theoretical yield . 7
8.11 Material placement efficiency . 7
8.12 Near-size material . 8
8.13 Test and equipment data . 8
9 Tabular and graphical presentation . 8
Annex A (informative) Calculation of the yield of each product of a size separation from
size analyses of feed and product materials .15
Annex B (informative) Worked example — Vibrating screen .18
Annex C (informative) Worked example — Cyclone .25
Annex D (informative) Worked example — Deduster .32
Bibliography .39
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing documents 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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 27 Solid mineral fuels, Subcommittee SC 1,
Coal preparation. Terminology and performance.
This second edition cancels and replaces the first edition (ISO 10752:1994), of which it constitutes a
minor revision.
The main changes compared to the previous edition are as follows:
— editorial corrections throughout the document.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved
Introduction
A standard expression of performance is required to define the accuracy of separation of a particular
item, to assist in the comparison of the performance of different items of coal sizing equipment and in
the prediction of separation results.
INTERNATIONAL STANDARD ISO 10752:2019(E)
Coal sizing equipment — Performance evaluation
1 Scope
This document describes the principles and methods for the expression of results of performance tests
on sizing equipment used in coal preparation, and includes methods for the evaluation of performance
parameters. Performance test procedures and size measurement techniques are recommended.
This document applies to all types of sizing equipment, categorized as follows:
a) screens;
b) classifiers;
c) others.
The procedure described in this document applies to two-product separations. Performance assessment
of multiproduct separations can be achieved by consideration of a series of two-product separations.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1213-1, Solid mineral fuels — Vocabulary — Part 1: Terms relating to coal preparation
ISO 13909, Hard coal and coke — Mechanical sampling
ISO 18283, Hard coal and coke — Manual sampling
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1213-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1 General
3.1.1
actual feed
F
material fed to the sizing equipment during the test period and including any recirculated material
3.1.2
coarser material
material that is coarser than the reference size
3.1.3
finer material
material that is finer than the reference size
3.1.4
product
material discharged from the sizing equipment prior to any further treatment or recirculation
3.1.5
coarser product
c
product of size separation that contains a greater proportion of coarser material than does the feed
3.1.6
finer product
f
product of size separation that contains a greater proportion of finer material than does the feed
3.1.7
sharpness of separation
E
pm
assessment of the deviation from a perfect separation, usually expressed in terms of mean probable error
3.2 Performance parameters
3.2.1
theoretical yield (sizing)
maximum yield of a product at a reference size, as determined from the size distribution curve for the
reconstituted feed
3.2.2
coarser material placement efficiency
E
c
percentage of coarser material in the reconstituted feed that reports to the coarser product
3.2.3
finer material placement efficiency
E
f
percentage of finer material in the reconstituted feed that reports to the finer product
3.2.4
overall separation index
sum of the coarser material placement efficiency and the finer material placement efficiency minus 100
4 Performance criteria
The following criteria should be determined where applicable:
a) feed rate;
b) reference size of separation;
c) sharpness of separation;
d) misplaced material;
e) material placement efficiencies;
f) the degree of difficulty of separation;
g) material characteristics.
NOTE 1 The above criteria will be influenced by test conditions which should therefore be fully reported.
NOTE 2 It is essential that prediction of separation results takes into account the influence of test conditions.
2 © ISO 2019 – All rights reserved
NOTE 3 It is essential that test conditions are made compatible to ensure valid comparisons.
NOTE 4 Conditions should be kept uniform during a test.
5 Performance parameters
For the standard expression of performance of a separation, the criteria given in Clause 4 should be
determined by the following parameters:
a) the feed rate, expressed on mass and/or volume bases;
b) the reference size, preferably expressed as both partition size and equal errors size;
NOTE It is recognized that partition size is not always obtainable from the results of a size separation
and that an alternative reference size therefore has to be employed. To allow comprehensive comparison of
performance, it is recommended that parameters based on equal errors size as the reference be included, in
addition to those based on partition size.
c) the sharpness of separation, expressed in terms of probable error;
d) th
...
INTERNATIONAL ISO
STANDARD 10752
Second edition
2019-06
Coal sizing equipment — Performance
evaluation
Équipement pour la granulométrie du charbon — Évaluation de
l'aptitude à l'emploi
Reference number
©
ISO 2019
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General . 1
3.2 Performance parameters . 2
4 Performance criteria . 2
5 Performance parameters . 3
6 Performance test procedures . 3
7 Analytical procedures . 4
8 Evaluation and presentation of performance characteristics . 5
8.1 General . 5
8.2 Basic data . 5
8.3 Reconstituted feed size distribution . 5
8.4 Partition curve . 5
8.5 Partition size . 6
8.6 Sharpness of separation . 6
8.7 Misplaced material curves . 6
8.8 Misplaced material . 6
8.9 Equal errors size . 7
8.10 Theoretical yield . 7
8.11 Material placement efficiency . 7
8.12 Near-size material . 8
8.13 Test and equipment data . 8
9 Tabular and graphical presentation . 8
Annex A (informative) Calculation of the yield of each product of a size separation from
size analyses of feed and product materials .15
Annex B (informative) Worked example — Vibrating screen .18
Annex C (informative) Worked example — Cyclone .25
Annex D (informative) Worked example — Deduster .32
Bibliography .39
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing documents 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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 27 Solid mineral fuels, Subcommittee SC 1,
Coal preparation. Terminology and performance.
This second edition cancels and replaces the first edition (ISO 10752:1994), of which it constitutes a
minor revision.
The main changes compared to the previous edition are as follows:
— editorial corrections throughout the document.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved
Introduction
A standard expression of performance is required to define the accuracy of separation of a particular
item, to assist in the comparison of the performance of different items of coal sizing equipment and in
the prediction of separation results.
INTERNATIONAL STANDARD ISO 10752:2019(E)
Coal sizing equipment — Performance evaluation
1 Scope
This document describes the principles and methods for the expression of results of performance tests
on sizing equipment used in coal preparation, and includes methods for the evaluation of performance
parameters. Performance test procedures and size measurement techniques are recommended.
This document applies to all types of sizing equipment, categorized as follows:
a) screens;
b) classifiers;
c) others.
The procedure described in this document applies to two-product separations. Performance assessment
of multiproduct separations can be achieved by consideration of a series of two-product separations.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1213-1, Solid mineral fuels — Vocabulary — Part 1: Terms relating to coal preparation
ISO 13909, Hard coal and coke — Mechanical sampling
ISO 18283, Hard coal and coke — Manual sampling
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1213-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1 General
3.1.1
actual feed
F
material fed to the sizing equipment during the test period and including any recirculated material
3.1.2
coarser material
material that is coarser than the reference size
3.1.3
finer material
material that is finer than the reference size
3.1.4
product
material discharged from the sizing equipment prior to any further treatment or recirculation
3.1.5
coarser product
c
product of size separation that contains a greater proportion of coarser material than does the feed
3.1.6
finer product
f
product of size separation that contains a greater proportion of finer material than does the feed
3.1.7
sharpness of separation
E
pm
assessment of the deviation from a perfect separation, usually expressed in terms of mean probable error
3.2 Performance parameters
3.2.1
theoretical yield (sizing)
maximum yield of a product at a reference size, as determined from the size distribution curve for the
reconstituted feed
3.2.2
coarser material placement efficiency
E
c
percentage of coarser material in the reconstituted feed that reports to the coarser product
3.2.3
finer material placement efficiency
E
f
percentage of finer material in the reconstituted feed that reports to the finer product
3.2.4
overall separation index
sum of the coarser material placement efficiency and the finer material placement efficiency minus 100
4 Performance criteria
The following criteria should be determined where applicable:
a) feed rate;
b) reference size of separation;
c) sharpness of separation;
d) misplaced material;
e) material placement efficiencies;
f) the degree of difficulty of separation;
g) material characteristics.
NOTE 1 The above criteria will be influenced by test conditions which should therefore be fully reported.
NOTE 2 It is essential that prediction of separation results takes into account the influence of test conditions.
2 © ISO 2019 – All rights reserved
NOTE 3 It is essential that test conditions are made compatible to ensure valid comparisons.
NOTE 4 Conditions should be kept uniform during a test.
5 Performance parameters
For the standard expression of performance of a separation, the criteria given in Clause 4 should be
determined by the following parameters:
a) the feed rate, expressed on mass and/or volume bases;
b) the reference size, preferably expressed as both partition size and equal errors size;
NOTE It is recognized that partition size is not always obtainable from the results of a size separation
and that an alternative reference size therefore has to be employed. To allow comprehensive comparison of
performance, it is recommended that parameters based on equal errors size as the reference be included, in
addition to those based on partition size.
c) the sharpness of separation, expressed in terms of probable error;
d) th
...
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