ISO/R 1016:1969
(Main)Withdrawal of ISO/R 1016-1969
Withdrawal of ISO/R 1016-1969
Annulation de l'ISO/R 1016-1969
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Standards Content (Sample)
Ref. No. : ISO/R 1016-1969 (E)
UDC662.642 : 662.613.11 : 543.062
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IS0
INTERN AT I ON A L O RG A N IZ AT1 O N FOR STAND AR D I ZATl O N
IS0 RECOMMENDATION
R 1016
DETERMINATION OF ASH
OF BROWN COALS AND LIGNITES
1st EDITION
March 1969
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The copyright of IS0 Recommendations and IS0 Standards
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IS0 Member Bodies. Reproduction of these
belongs to
r
documents, in any country, may be authorized therefore only
1
by the national standards organization of that country, being
i’ ;‘ /
a member of ISO.
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,i
j’ For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 1016, Determination ofash of brown coals and lignites, was drawn up by Technical
Committee ISO/TC 27, Solid mineralfuels, the Secretariat of which is held by the British Standards Institution (BSI).
Work on this question led, in 1966, to the adoption of a Draft IS0 Recommendation.
In August 1967, this Draft IS0 Recommendation (No. 1283) was circulated to all the IS0 Member Bodies for
enquiry. It was approved, subject to a few modifications of an editorial nature, by the following Member Bodies :
i
.4ustralia Iran South Africa, Rep. of
Austria Italy Spain
Canada Japan Switzerland
Czechoslovakia Korea, Rep. of Turkey
Denmark Netherlands U.A.R.
France New Zealand United Kingdom
Germany
Portugal U.S.S.R.
India
Romania Yugoslavia
No Member Body opposed the approval of the Draft
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council which decided, in
March 1969, to accept it as an IS0 RECOMMENDATION.
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ISO/R 1016-1969 (E)
IS0 Recommendation R 1016 March 1969
DETERMINATION OF ASH
OF BROWN COALS AND LIGNITES
1. SCOPE
This IS0 Recommendation describes a method of determining the ash of brown coals and lignites.
2. FIELD OF APPLICATION
When brown coal or lignite is incinerated completely, the ash remaining differs from the mineral matter originally
present in the brown coal or lignite. This is because various changes occur during incineration, such as loss of
water of constitution from shaly matter and of carbon dioxide from carbonates, and the oxidation of iron pyrites
to iron oxide. The fmation of oxides of sulphur by bases also occurs. The method for the determination of ash
of brown coals and lignites is, therefore, empirical, because the conditions of incineration determine the extent
to which these reactions occur. It is essential, therefore, to adhere strictly to the procedure laid down to obtain
reproducible results.
3. PRINCIPLE
Brown coal or lignite is heated in air to a temperature of 250 "C in 30 minutes; from 250 "C to 500 "C in a
further 30 minutes; from 500 "C to 815 "C in a further 60 minutes; and is maintained at this last temperature
until it is constant in mass.
is calculated from the mass of residue after incineration.
The percentage of ash
4. APPARATUS
4.1 Balance, sensitive to 0.1 mg.
4.2 Muffle furnace, capable of giving a substantially uniform temperature zone at 250 "C after 30 minutes of
heating from room temperature, of
...
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