ASTM D3180-07

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Designation:D3180–07
Standard Practice for
Calculating Coal and Coke Analyses from As-Determined to
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Different Bases
This standard is issued under the fixed designation D3180; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Practice D2013 and Test Method D3302. As-determined data
represents the numerical values obtained at the particular
1.1 This practice gives formulas to enable analytical data to
moisture level in the sample at the time of analysis. These
be expressed on various different bases in common use. Such
values are normally converted, according to formulae con-
bases are: as received, dry, equilibrium moisture, dry ash free,
tained herein, to conventional reporting bases.
and others.
3.1.2 as-received basis—analytical data calculated to the
1.2 This standard does not purport to address all of the
moisture condition of the sample as it arrived at the laboratory
safety concerns, if any, associated with its use. It is the
and before any processing or conditioning. If the sample has
responsibility of the user this standard to establish appropriate
been maintained in a sealed state so that there has been no gain
safety and health practices and determine the applicability of
or loss, the as-received basis is equivalent to the moisture basis
regulatory limitations prior to use.
as sampled.
1.3 The values stated in SI units are to be regarded as the
3.1.3 dry basis—data calculated to a theoretical base of no
standard.
moisture associated with the sample. The numerical value as
2. Referenced Documents established by Test Method D3173 is used for converting the
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as-determined data to a dry basis.
2.1 ASTM Standards:
3.1.4 dry, ash-free basis—data calculated to a theoretical
D388 Classification of Coals by Rank
base of no moisture or ash associated with the sample.
D1412 Test Method for Equilibrium Moisture of Coal at 96
Numerical values as established by Test Method D3173 and
to 97 Percent Relative Humidity and 30°C
Test Method D3174 are used for converting the as-determined
D2013 Practice for Preparing Coal Samples for Analysis
data to a moisture- and ash-free basis.
D3173 Test Method for Moisture in theAnalysis Sample of
3.1.5 equilibrium moisture base—data calculated to the
Coal and Coke
moisture level established as the equilibrium moisture. Nu-
D3174 Test Method forAsh in theAnalysis Sample of Coal
merical values as established by Test Method D1412 are used
and Coke from Coal
for the calculation.
D3302 Test Method for Total Moisture in Coal
4. Significance and Use
3. Terminology
4.1 The calculations of analytical data for the coal and coke
3.1 Definitions:
test parameters listed in Section 6, assume the analysis sample
3.1.1 as-determined basis—analytical data obtained from
has been prepared according to Practice D2013 and Test
the analysis sample of coal or coke after conditioning and
Method D3302.
preparation to No. 60 (250-µm) sieve in accordance with
4.2 This practice provides formulas, to enable calculations
of data from the as-determined analysis sample to various
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This practice is under the jurisdiction of ASTM Committee D05 on Coal and
moisture basis, in common use by the coal and coke industry.
Coke and is the direct responsibility of D05.21 on Methods of Analysis.
Current edition approved July 15, 2007. Published July 2007. Originally
5. Applicable Parameters and Symbols Used
approved in 1974. Last previous edition approved in 2002 as D3180 – 89(2002).
DOI: 10.1520/D3180-07.
5.1 Thecalculationproceduresdefinedin6.1.3and6.2.2are
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
applicable to the following analysis parameters when ex-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
pressed as weight percent, µg/g (trace elements) or Btu/lb
Standards volume information, refer to the standard’s Document Summary page on
(gross calorific value):
the ASTM website.
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D3180–07
TABLE 1 Conversion Formula Chart
Wanted
Given
As-Determined (ad) As-Received (ar) Dry (d) Dry Ash-free (daf)
As-Determined (ad) 100 2 M 100 100
ar
100 2 M 100 2 M 100 2 M 2 A
ad ad ad ad
As-Received (ar) 100 2 M 100 100
ad
100 2 M 100 2 M 100 2 M 2 A
ar ar ar ar
Dry (d) 100 2 M 100 2 M 100
ad ar
100 100 100 2 A
d
Dry Ash-free (daf) 100 2 M 2 A 100 2 M 2 A 100 2 A
ad ad ar ar d
100 100 100
6.1.2.2 H and Ox reported do not include H and Ox in
Ash
Carbon
water:
Carbon dioxide
100 2 M
Chlorine
...