ASTM D1412-03

Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30&#176C

SCOPE
1.1 This test method covers determination of the equilibrium moisture of coal in an atmosphere over a saturated solution of potassium sulfate at 30°C.  
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Apr-2003
• ICS: 73.040 - Coals
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.21 - Methods of Analysis

Relations

• Replaces: ASTM D1412-02a - Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30&#176C
• Effective Date: 10-Apr-2003
• Replaced By: ASTM D1412-04 - Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30°C
• Effective Date: 01-Apr-2004
• Referred By: ASTM D5192/D5192M-22 - Standard Practice for Collection of Coal Samples from Core
• Effective Date: 10-Apr-2003
• Referred By: ASTM D3180-15 - Standard Practice for Calculating Coal and Coke Analyses from As-Determined to Different Bases
• Effective Date: 10-Apr-2003
• Referred By: ASTM D7569/D7569M-10(2015)e1 - Standard Practice for Determination of Gas Content of Coal—Direct Desorption Method
• Effective Date: 10-Apr-2003
• Referred By: ASTM D121-15 - Standard Terminology of Coal and Coke
• Effective Date: 10-Apr-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 1412 – 03
Standard Test Method for
Equilibrium Moisture of Coal at 96 to 97 Percent Relative
1
Humidity and 30°C
This standard is issued under the fixed designation D 1412; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Significance and Use
2
1.1 This test method covers determination of the equilib- 3.1 This test method affords a means of estimating the bed
rium moisture of coal in an atmosphere over a saturated moisture of either coal that is wet and shows visible surface
solution of potassium sulfate at 30°C. moisture or coal that may have lost some moisture. It may be
1.2 This standard does not purport to address all of the used for estimating the surface, or extraneous moisture of wet
safety concerns, if any, associated with its use. It is the coal, such moisture being the difference between the total
responsibility of the user of this standard to establish appro- moisture as determined by Test Method D 3302 and the
priate safety and health practices and determine the applica- equilibrium moisture.
bility of regulatory limitations prior to use. 3.2 When samples are collected in conformity with Classi-
fication D 388, the equilibrium moisture is considered to be
2. Referenced Documents
equal to bed moisture with the exception of some low rank
2.1 ASTM Standards: coals that yield equilibrium moisture values below bed mois-
3
D 121 Terminology of Coal and Coke
ture.
3
D 388 Classification of Coals by Rank
3
4. Apparatus
D 2013 Practice for Preparing Coal Samples for Analysis
3
D 2234 Practice for Collection of a Gross Sample of Coal 4.1 Water Bath or Insulated Air Cabinet—The bath or
3
D 3172 Practice for Proximate Analysis of Coal and Coke cabinet shall be of sufficient size to accommodate several
D 3173 Test Method for Moisture in the Analysis Sample of vacuum-type desiccators, and shall be provided with a tem-
3
Coal and Coke perature regulator to maintain a uniform temperature of 30.0 6
3
D 3302 Test Method for Total Moisture in Coal 0.2°C.
D 4596 Practice for Collection of Channel Samples of Coal 4.2 Moisture Oven—The oven shall be so constructed as to
3
in the Mine have a uniform temperature in all parts and a minimum of air
space. It may be of the type shown in the Apparatus section of
Test Method D 3173. Provision shall be made for renewing the
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal
air (or, if desired, dry oxygen-free nitrogen for subbituminous
and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of
and lignitic coals) in the oven at the rate of two times per
Analysis.
Current edition approved April 10, 2003. Published May 2003. Originally
minute, with the air dried by passing it through H SO (sp gr
2 4
approved in 1956 . Last previous edition approved in 2002 as D 1412 – 02a.
1.84).
2
For information concerning the experimental work on which this test method is
4.3 Mechanical Vacuum Pump.
based, see the following papers:
Stansfield, Edgar and Gilbart, K. C., “Moisture Determination for Coal Classi- 4.4 Crusher, laboratory, coffee-mill type.
fication,” Transactions, American Institute of Mining and Metallurgical Engineers,
4.5 Sieve, 203-mm (8-in.) diameter, with 1.18-mm (No. 16)
Coal Division, TAMCA, Vol 101, 1932, pp. 125–43.
openings.
Rees, O. W., Reed, F. H., and Land, G. W., “A Study of the Equilibration Method
4.6 Shaking Machine.
of Determining Moisture in Coal for Classification by Rank,” Report of Investiga-
tions No. 58, Illinois State Geological Survey, ILGIA, 1939, pp. 34.
4.7 Desiccator—Small vacuum-type desiccator, 160 mm in
Krumin, Peter, “The Determination of Forms of Moisture in Coal,” No. 195,
diameter (see Fig. 1).
Ohio State University, p. 92, 1963.
4.8 Weighing Bottles, glass, low-form, flat-bottom, cylindri-
Kreulen, D. J. W., “The Adsorption Water of Coal,” Chemische en Pharma-
ceutische Techniek (Dordrecht), CHPHA, Vol 7, 1951, pp. 23–24. cal, 70 mm in diameter, with well-fitting covers.
Selvig, W. A., and Ode, W. H., “Determination of Moisture-Holding Capacity
4.9 Filter Pump, aspirator.
(Bed Moisture) of Coal for Classification by Rank,” Report of Investigations No.
1
4.10 Buchner-Type Funnel, approximately 64 mm (2 ⁄2in.)
4968, U.S. Bureau of Mines, XMBUA 1953.
3
in diameter.
Annual Book of ASTM Standards, Vol 05.06.
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D1412–03
7.1.1 Divide sample in accordance with Method D 2013.
7.1.2 Rapidly stage crush the div
...