Coal and coke -- Calculation of analyses to different bases

ISO 1170:2013 gives equations that allow analytical data relating to coal and coke to be expressed on the various different bases in common use. Consideration is given to corrections that can be applied to certain determined values for coal prior to their calculation to other bases.

Charbon et coke -- Calculs pour les analyses par rapport à différentes bases

General Information

Status
Replaced
Publication Date
17-Jul-2013
Withdrawal Date
17-Jul-2013
Current Stage
9599 - Withdrawal of International Standard
Completion Date
18-Jul-2013
Ref Project

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INTERNATIONAL ISO
STANDARD 1170
Third edition
2013-07-01
Coal and coke — Calculation of
analyses to different bases
Charbon et coke — Calculs pour les analyses par rapport à
différentes bases
Reference number
ISO 1170:2013(E)
ISO 2013
---------------------- Page: 1 ----------------------
ISO 1170:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013

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.
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Published in Switzerland
ii © ISO 2013 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 1170:2013(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normatives references ................................................................................................................................................................................... 1

3 Principle ........................................................................................................................................................................................................................ 1

4 Symbols .......................................................................................................................................................................................................................... 1

5 Calculations for coal analyses ................................................................................................................................................................. 2

5.1 Introduction .............................................................................................................................................................................................. 2

5.2 Procedure .................................................................................................................................................................................................... 2

5.3 Carbon ............................................................................................................................................................................................................ 2

5.4 Hydrogen ...................................................................................................................................................................................................... 2

5.5 Nitrogen ........................................................................................................................................................................................................ 3

5.6 Sulfur ............................................................................................................................................................................................................... 3

5.7 Oxygen ............................................................................................................................................................................................................ 3

5.8 Chlorine ......................................................................................................................................................................................................... 4

5.9 Volatile matter ......................................................................................................................................................................................... 4

5.10 Net calorific value ................................................................................................................................................................................. 4

6 Calculations for coke analyses ............................................................................................................................................................... 4

7 Table for calculation to different bases ........................................................................................................................................ 5

Annex A (normative) Mineral matter .................................................................................................................................................................. 6

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2013 – All rights reserved iii
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ISO 1170:2013(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.

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. 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. 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.

The committee responsible for this document is ISO/TC 27, Solid mineral fuels, Subcommittee SC 5,

Methods of analysis.

This third edition cancels and replaces the second edition (ISO 1170:2008), of which it constitutes a

minor revision.
iv © ISO 2013 – All rights reserved
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INTERNATIONAL STANDARD ISO 1170:2013(E)
Coal and coke — Calculation of analyses to different bases
1 Scope

This International Standard gives equations that allow analytical data relating to coal and coke to be

expressed on the various different bases in common use. Consideration is given to corrections that can

be applied to certain determined values for coal prior to their calculation to other bases.

2 Normatives references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 602, Coal — Determination of mineral matter
ISO 17247, Coal — Ultimate analysis
3 Principle

In order to convert an analytical result expressed on one basis to another basis, it is multiplied by a factor

calculated from the appropriate formulae (see Table 1) after insertion of the requisite numerical values.

4 Symbols

The symbols employed in the subsequent clauses are as follows, with suffixes (separated by a dot)

“ad” (air-dried), “ar” (as-received), “d” (dry), “daf” (dry, ash-free) or “dmmf” (dry, mineral-matter-free)

where appropriate.
w ash, expressed as percent mass fraction
w carbon content, expressed as percent mass fraction
w chlorine content, expressed as percent mass fraction
w inorganic chlorine content, expressed as percent mass fraction
Cl.inorg
w carbon dioxide content, expressed as percent mass fraction
CO2

w hydrogen content, excluding hydrogen in the moisture, but including the hydrogen from water

of hydration in minerals, expressed as percent mass fraction
w moisture content, expressed as percent mass fraction
H2O
w water of hydration in the mineral matter, expressed as percent mass fraction
w mineral matter content, expressed as percent mass fraction (see Annex A)
w nitrogen content, expressed as percent mass fraction

w oxygen content, excluding oxygen in the moisture but including the oxygen from water of

hydration in minerals, expressed as percent mass fraction
w organic sulfur content, expressed as percent mass fraction
S,o
© ISO 2013 – All rights reserved 1
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ISO 1170:2013(E)
w pyritic sulfur content, expressed as percent mass fraction
S,p
w sulfate sulfur content, expressed as percent mass fraction
S,s
w total sulfur content, expressed as percent mass fraction
S,T
w volatile matter content, expressed as percent mass fraction

F national correction factor for the estimation of the inorganic chlorine content

F national correction factor for the estimation of water of hydration

F national correction factor for the estimation of the mineral matter (see Annex A)

5 Calculations for coal analyses
5.1 Introduction

In International Standards covering the analysis of coal, it is generally specified that the determination

shall be carried out on an air-dried test sample. However, in making use of these analyses, it is sometimes

necessary to express or report the results on some other basis. The bases in common use are “air-dried”,

“as-received”, “dry”, “dry, ash-free”, and “dry, mineral-matter-free”.
5.2 Procedure

Any analytical value (except net calorific value) on a particular basis may be converted to any other

basis by multiplying it by the appropriate factor calculated from the formulae given in Table 1, after

insertion of the requisite numerical values for the symbols (for determination of moisture, see ISO 589

and ISO 11722; for ash, see ISO 1171). However, in some determinations, there is a direct involvement of

the mineral matter and, in these cases, it is essential to apply a correction to the air-dried result prior to

its calculation to the dry, mineral-matter-free basis. This correction is dependent on the nature, as well

as the quantity, of the mineral matter present and, for any given sample, the formula recommended by

the national standards organization of the country of origin of the sample should be use

...

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