ASTM D293-93(1999)

Standard Test Method for the Sieve Analysis of Coke

SCOPE
1.1 This test method describes the separation of a coke sample into defined size fractions and expressing said fractions as a weight percent of the gross sample.  
1.2 The values stated in SI units are to be regarded as the standard. Inch-pound units shall be accepted on an equivalent basis.  
1.3 This standard does not purport to address all of the safety problems, 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-Sep-1999
• ICS: 75.160.10 - Solid fuels
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.15 - Metallurgical Properties of Coal and Coke

Relations

• Replaced By: ASTM D293-93(2004) - Standard Test Method for the Sieve Analysis of Coke
• Effective Date: 01-Apr-2004
• Referred By: ASTM D3038-93(2018) - Standard Test Method for Drop Shatter Test for Coke
• Effective Date: 10-Sep-1999

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 293 – 93 (Reapproved 1999)
Standard Test Method for the
Sieve Analysis of Coke
This standard is issued under the fixed designation D 293; 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 4.1.1 For complete characterization of the size range of a
coke sample, the number and size of the selected sieves should
1.1 This test method describes the separation of a coke
be such that no more than 25 % of the gross sample weight will
sample into defined size fractions and expressing said fractions
be retained on any given sieve.
as a weight percent of the gross sample.
4.1.2 For coke 38.1 mm (1 ⁄2 in.) and larger in size, sieves
1.2 The values stated in SI units are to be regarded as the
of heavy double-crimped wire and square or rectangular frames
standard. Inch-pound units shall be accepted on an equivalent
2 2
with 0.56 to 0.84 m (6 to 9 ft ) of sieve area are satisfactory.
basis.
For coke smaller than 38.1 mm (1 ⁄2 in.) in size, sieves of
1.3 This standard does not purport to address all of the
double-crimped wire and square or circular frames with 0.19 to
safety concerns, if any, associated with its use. It is the
2 2
0.37 m (2 to 4 ft ) of sieve area are usually more convenient.
responsibility of the user of this standard to establish appro-
4.2 Weighing Balance, preferably of the platform type,
priate safety and health practices and determine the applica-
having a sensitivity of 0.025 kg (0.05 lbs) or better, at rated
bility of regulatory limitations prior to use.
capacity and with graduations such that 0.05 kg (0.1 lb) can be
2. Referenced Documents read without interpolation.
2.1 ASTM Standards:
5. Test Sample
D 346 Practice for Collection and Preparation of Coke
5.1 The test sample shall be taken in accordance with
Samples for Laboratory Analysis
Practice D 346.
D 4621 Guide for Accountability and Quality Control in the
Coal Analysis Laboratory
6. Procedure
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
6.1 Starting with the sieve having the largest opening, sieve
poses
the sample of coke in quantities small enough to prevent
E 323 Specification for Perforated-Plate Sieves for Testing
3 plugging and clogging of the sieve.
Purposes
6.1.1 Hand-fit each piece of coke retained on the 38.1-mm
3. Significance and Use (1 ⁄2-in.) or larger sieve. A piece is considered undersize, if in
some position and without forcing, it passes the sieve opening.
3.1 This test method determines the size distribution of coke
6.1.2 Shake vigorously on each succeeding sieve coke
for conformance to specifications of percentages retained on
pieces passing the 38.1-mm (1 ⁄2-in.) sieve. This shaking may
designated screen sizes.
be performed manually or mechanically provided mechanical
4. Apparatus
shaking yields results equivalent to manual shaking. Note that
the objectives of shaking, either manual or mechanical, are to
4.1 Sieves—Use square-hole sieves conforming to Specifi-
place all of the naturally occurring pieces of a given size range
cation E 11. Where sieves larger than 100 mm (4 in.) are
on the appropriate sieve and to avoid degradation of the
required, the specifications for same shall be by mutual
naturally occurring sizes.
agreement between interested parties. Permissible variations in
6.2 Record to the nearest 0.05 kg (0.1 lb) the weight of coke
sieve openings and spacings shall be in accordance with
ret
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