ASTM D3173-03

Standard Test Method for Moisture in the Analysis Sample of Coal and Coke

SIGNIFICANCE AND USE
Moisture as determined by this test method is used for calculating other analytical results to a moisture free basis using procedures in Practice D 3180. Moisture percent determined by this test method may be used in conjunction with the air-dry moisture loss determined in Method D 2013 and Test Method D 3302 to determine total moisture in coal. Total moisture is used for calculating other analytical results to “as received” basis using Practice D 3180. Moisture, ash, volatile matter, and fixed carbon percents constitute the proximate analysis of coal and coke.
SCOPE
1.1 This test method covers the determination of moisture in the analysis sample of coal or coke. It is used for calculating other analytical results to a dry basis. When used in conjunction with the air drying loss as determined in accordance with Method D 2013 or Practice D 346, each analytical result can be calculated to an as-received basis:
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: 75.160.10 - Solid fuels
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.21 - Methods of Analysis

Relations

• Replaces: ASTM D3173-02 - Standard Test Method for Moisture in the Analysis Sample of Coal and Coke
• Effective Date: 10-Apr-2003
• Replaced By: ASTM D3173-03(2008) - Standard Test Method for Moisture in the Analysis Sample of Coal and Coke
• Effective Date: 01-Feb-2008
• Referred By: ASTM D4208-19 - Standard Test Method for Total Chlorine in Coal by the Oxygen Vessel Combustion/Ion Selective Electrode Method
• Effective Date: 10-Apr-2003
• Referred By: ASTM D6721-01(2015) - Standard Test Method for Determination of Chlorine in Coal by Oxidative Hydrolysis Microcoulometry
• Effective Date: 10-Apr-2003
• Referred By: ASTM D8214-18 - Standard Test Method for Forms of Sulfur in Coal by Inductively Coupled Plasma Atomic Emission Spectrometry
• Effective Date: 10-Apr-2003
• Referred By: ASTM D7582-15 - Standard Test Methods for Proximate Analysis of Coal and Coke by Macro Thermogravimetric Analysis
• Effective Date: 10-Apr-2003
• Referred By: ASTM E1515-14(2022) - Standard Test Method for Minimum Explosible Concentration of Combustible Dusts
• Effective Date: 10-Apr-2003
• Referred By: ASTM D5865/D5865M-19 - Standard Test Method for Gross Calorific Value of Coal and Coke
• Effective Date: 10-Apr-2003
• Referred By: ASTM D6357-21b - Standard Test Methods for Determination of Trace Elements in Coal, Coke, and Combustion Residues from Coal Utilization Processes by Inductively Coupled Plasma Atomic Emission Spectrometry, Inductively Coupled Plasma Mass Spectrometry, and Graphite Furnace Atomic Absorption Spectrometry
• Effective Date: 10-Apr-2003
• Referred By: ASTM D6414-23 - Standard Test Methods for Total Mercury in Coal and Coal Combustion Residues by Acid Extraction or Wet Oxidation/Cold Vapor Atomic Absorption
• Effective Date: 10-Apr-2003
• Referred By: ASTM D8010-18 - Standard Test Method for Determination of Water Soluble Alkali Content in Coal
• Effective Date: 10-Apr-2003
• Referred By: ASTM D6796-21e1 - Standard Practice for Production of Coal, Coke and Coal Combustion Samples for Interlaboratory Studies
• Effective Date: 10-Apr-2003
• Referred By: ASTM D1412/D1412M-20 - Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
• Effective Date: 10-Apr-2003
• Referred By: ASTM D3172-13(2021)e1 - Standard Practice for Proximate Analysis of Coal and Coke
• Effective Date: 10-Apr-2003
• Referred By: ASTM E2019-03(2019) - Standard Test Method for Minimum Ignition Energy of a Dust Cloud in Air
• 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:D3173–03
Standard Test Method for
1
Moisture in the Analysis Sample of Coal and Coke
This standard is issued under the fixed designation D3173; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope matter, and fixed carbon percents constitute the proximate
analysis of coal and coke.
1.1 Thistestmethodcoversthedeterminationofmoisturein
the analysis sample of coal or coke. It is used for calculating
5. Analysis Sample
other analytical results to a dry basis. When used in conjunc-
5.1 The analysis sample is that sample which has been
tion with the air drying loss as determined in accordance with
pulverized to pass 250-µm (No. 60) sieve as prepared in
MethodD2013orPracticeD346,eachanalyticalresultcanbe
accordance with Practice D346 or Method D2013.
calculated to an as-received basis:
1.2 This standard does not purport to address all of the
6. Apparatus
safety concerns, if any, associated with its use. It is the
6.1 Drying Oven, for coal samples:
responsibility of the user of this standard to establish appro-
6.1.1 Fordeterminingthemoistureofcoal,theovenshallbe
priate safety and health practices and determine the applica-
so constructed as to have a uniform temperature in all parts,
bility of regulatory limitations prior to use.
have a minimum of air space, and be capable of temperature
regulation between the limits of 104 and 110°C. It may be of
2. Referenced Documents
theformshowninFig.1.Provisionshallbemadeforrenewing
2.1 ASTM Standards:
the preheated air in the oven at the rate of two to four times a
D346 Practice for Collection and Preparation of Coke
2
minute, with the air dried as defined in 7.1.
Samples for Laboratory Analysis
2 6.1.2 In the oven shown in Fig. 1, the door should contain a
D2013 Practice for Preparing Coal Samples for Analysis
1
hole of approximately 3.2 mm ( ⁄8 in.) in diameter near the
D3180 Practice for Calculating Coal and Coke Analyses
2 bottom to permit a free flow of air through the oven space.
from As-Determined to Different Bases
2
6.2 Drying Oven, for coke samples. For determining the
D3302 Test Method for Total Moisture in Coal
moisture of coke, an ordinary drying oven with openings for
3. Summary of Test Method natural air circulation and capable of temperature regulation
between limits of 104 and 110°C may be used.
3.1 Moisture is determined by establishing the loss in
6.3 Capsules,withcovers.Aconvenientform,whichallows
weight of the sample when heated under rigidly controlled
the ash determination to be made on the same sample, is a
conditions of temperature, time and atmosphere, sample
7 3
porcelain capsule, 22 mm ( ⁄8 in.) in depth and 44 mm (1 ⁄4 in.
weight, and equipment specifications.
) in diameter, or a fused silica capsule of similar shape. These
4. Significance and Use capsules shall be used with a well-fitting flat aluminum cover,
illustrated in Fig. 2. Platinum crucibles or glass capsules with
4.1 Moisture as determined by this test method is used for
ground-glasscapsmayalsobeused.Theyshouldbeasshallow
calculating other analytical results to a moisture free basis
as possible, consistent with convenient handling.
using procedures in Practice D3180. Moisture percent deter-
mined by this test method may be used in conjunction with the
7. Reagents
air-dry moisture loss determined in Method D2013 and Test
7.1 Dry Air—Air used to purge the drying oven should be
Method D3302 to determine total moisture in coal. Total
dried to a moisture content of 1.9 mg/L or less. (Dew
moisture is used for calculating other analytical results to “as
point−10°C or less.)Any desiccant or drying method capable
received” basis using Practice D3180. Moisture, ash, volatile
of achieving this degree of dryness is suitable.
7.2 Desiccants—Materials suitable for use in the desiccator
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal may be chosen from the following:
and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of
7.2.1 Anhydrous Calcium Sulfate (0.004 mg/L).
Analysis.
7.2.2 Silica Gel.
Current edition approved April 10, 2003. Published May 2003. Originally
7.2.3 Magnesium Perchlorate (0.0005 mg/L).
approved in 1973. Last previous edition approved 2002 as D3173–02.
2
Annual Book of ASTM Standards, Vol 05.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D3173–03
8.3 Afterremovingthecovers,quicklyplacethecapsulesin
a preheated oven (at 104 to 110°C) through which passes a
current of dry air. (The cur
...