Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size

SCOPE
1.1 This test method covers procedures for determining the sieve analysis of coal and designating the size of coal from sieve analysis data. Raw as well as prepared (crushed, cleaned or screened) coals can be tested by this test method.
1.2 This test method explains how to designate coal sizes from the results of sieve analysis data in order to represent the condition of the coal as sold. In the case of special mixtures or coals with noncontinuous ranges of sizes, a sufficiently complete sieve analysis must be made to properly describe the size distribution.
1.3 This test method is not applicable for determining the sieve analysis nor for designating the size of pulverized coal. Size fractions down to and including 38 m (No. 400 U.S.A. Standard Series) can be treated by the methods discussed in this test method. Methods for handling size fractions below 38 m (No. 400) will be developed by this committee.
1.4 The values stated in metric units shall be regarded as standard. The values shown in parentheses are provided for information only. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way.
1.5 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
26-Nov-1987
Current Stage
Ref Project

Relations

Effective Date
27-Nov-1987

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ASTM D4749-87(2002) - Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D4749–87(Reapproved2002)
Standard Test Method for
Performing the Sieve Analysis of Coal and Designating Coal
1
Size
This standard is issued under the fixed designation D4749; 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.
3
1. Scope D2013 Practice for Preparing Coal Samples for Analysis
3
D2234 Practice for Collection of a Gross Sample of Coal
1.1 This test method covers procedures for determining the
D4371 TestMethodforDeterminingtheWashabilityChar-
sieve analysis of coal and designating the size of coal from
3
acteristics of Coal
sieve analysis data. Raw as well as prepared (crushed, cleaned
E11 Specification for Wire-Cloth and Sieves for Testing
or screened) coals can be tested by this test method.
4
Purposes
1.2 This test method explains how to designate coal sizes
E323 Specification for Perforated-Plate Sieves for Testing
from the results of sieve analysis data in order to represent the
4
Purposes
condition of the coal as sold. In the case of special mixtures or
2.2 Other Document:
coals with noncontinuous ranges of sizes, a sufficiently com-
Specification C-80 Commonwealth of Pennsylvania, De-
plete sieve analysis must be made to properly describe the size
partmentofGeneralServices,BureauofPurchases,Speci-
distribution.
5
fication for Coal:Anthracite
1.3 This test method is not applicable for determining the
2
sieve analysis nor for designating the size of pulverized coal.
3. Descriptions of Terms Specific to this Standard
Size fractions down to and including 38 µm (No. 400 U.S.A.
3.1 as-mined coal—same as ROM coal (3.8).
Standard Series) can be treated by the methods discussed in
3.2 as-shipped or produced coal—raw or prepared coal in
this test method. Methods for handling size fractions below 38
any state or condition at which it leaves the mine property or
µm (No. 400) will be developed by this committee.
loading facility.
1.4 The values stated in metric units shall be regarded as
3.3 bottomsize, nominal—the sieve designating the lower
standard. The values shown in parentheses are provided for
limit or bottomsize shall be that sieve of the series given in
information only. The values stated in each system may not be
Section 6 with the largest openings through which passes a
exact equivalents; therefore, each system must be used inde-
total of less than 15% of the sample. This defined bottomsize
pendently of the other, without combining values in any way.
is not to be confused with the size of the smallest particles in
1.5 This standard does not purport to address all of the
the lot. (Warning—In the case of a commercial, double-
safety concerns, if any, associated with its use. It is the
1 3
screened product, for example, 37.5 by 9.5 mm (1 ⁄2 by ⁄8 in.),
responsibility of the user of this standard to establish appro-
this designation may not be valid. In such commercial or
priate safety and health practices and determine the applica-
contractual situations, the amount of allowable material
bility of regulatory limitations prior to use.
smaller than the bottomsize (for example, 9.5 mm) must be
2. Referenced Documents specified by the contract under which the coal is bought and
sold.)
2.1 ASTM Standards:
3.4 dry sieving—for the purposes of this test method, the
D197 Test Method for Sampling and Fineness Test of
3 test method for the sieving of coal after the sample has been
Pulverized Coal
air-dried under prescribed conditions; this is generally used
D346 Practice for Collection and Preparation of Coke
3
when testing with coal particles larger than 600 µm. (No. 30
Samples for Laboratory Analysis
3
U.S.A. Standard Sieve Series.)
D388 Classification of Coals by Rank
3.5 opening—for the purpose of this test method, openings
and apertures shall be regarded as synonomous terms. Dimen-
1
sions for round and square openings shall be determined as
This test method is under the jurisdiction of ASTM Committee D05 on Coal
and Coke and is the direct responsibility of Subcommittee D05.07 on Physical
follows: for round holes, dimensions shall refer to the opening
Characteristics of Coal.
Current edition approved Nov. 27, 1987. Published January 1988. Originally
e1
published as D4749–87. Last previous edition D4749–87 (1994) .
2 4
For powdered or pulverized coal as is fired into steam boilers, refer to Method Annual Book of ASTM Standards, Vol 14.02.
5
D197. Available from Commonwealth of Pennsylvania, Dept. of General Services,
3
Annual Book of ASTM Standards, Vol 05.06. Bureau of Purchases, 414 N. Office Building, Harrisburg, PA 17125.
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