ASTM D3038-93(2004)
(Test Method)Standard Test Method for Drop Shatter Test for Coke
Standard Test Method for Drop Shatter Test for Coke
SIGNIFICANCE AND USE
The values determined in this test, when evaluated in terms of pertinent experience with other cokes, may be used as indications of the extent to which a given coke will break in conventional transit and handling beyond the point of sampling.
SCOPE
1.1 This test method covers the application of two procedures for the determination of the property of coke of withstanding breakage when dropped under specified test conditions.
1.2 Procedure A used when the coke sample contains 50 % or less of 100 mm (4 in.) after removal of coke smaller than 50 mm (2 in.). Procedure A appears in Sections .
1.3 Procedure B used when the coke sample contains more than 50 % 100 mm (4 in.) after removal of coke smaller than 50 mm (2 in.). Procedure B appears in Sections .
1.4 &si-value;
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.
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Designation:D3038–93 (Reapproved 2004)
Standard Test Method for
Drop Shatter Test for Coke
This standard is issued under the fixed designation D3038; 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 E323 Specification for Perforated-Plate Sieves for Testing
Purposes
1.1 This test method covers the application of two proce-
dures for the determination of the property of coke of with-
3. Significance and Use
standing breakage when dropped under specified test condi-
3.1 The values determined in this test, when evaluated in
tions.
terms of pertinent experience with other cokes, may be used as
1.2 Procedure A, used when the coke sample contains 50 %
indications of the extent to which a given coke will break in
or less of 100 mm (4 in.) after removal of coke smaller than 50
conventional transit and handling beyond the point of sam-
mm (2 in.). Procedure A appears in Sections 6-9.
pling.
1.3 Procedure B, used when the coke sample contains more
than 50 % 100 mm (4 in.) after removal of coke smaller than
4. Apparatus
50 mm (2 in.). Procedure B appears in Sections 10-13.
4.1 Shatter Apparatus, including (1) box, (2) base plate, (3)
1.4 The values stated in SI units are to be regarded as
support frame, (4) containers, (5) sieves, and (6) weighing
standard. The values given in parentheses are for information
scales (see Fig. 1).
only.
4.1.1 Box, 455 mm (18 in.) in width, 710 mm (28 in.) in
1.5 This standard does not purport to address all of the
length, and 380 mm (15 in.) in depth. The bottom of the box
safety concerns, if any, associated with its use. It is the
shall consist of two doors, hinged lengthwise and provided
responsibility of the user of this standard to establish appro-
with a trip latch for rapid opening. The doors are of 6-mm
priate safety and health practices and determine the applica-
( ⁄4-in.) plate and are mounted on freely working hinges so that
bility of regulatory limitations prior to use.
they swing open rapidly and do not impede the fall of the coke.
2. Referenced Documents The sides of the box are made of plate at least 3 mm ( ⁄8 in.)
2 thick.
2.1 ASTM Standards:
4.1.2 Base Plate—Steel plate, 1.22 m (48 in.) in length, 965
D121 Terminology of Coal and Coke
mm (38 in.) in width, and not less than 13 mm ( ⁄2 in.) thick.
D293 Test Method for the Sieve Analysis of Coke
Vertical plates at least 200 mm (8 in.) high are placed on all
D346 Practice for Collection and Preparation of Coke
four sides to form a shallow box and to prevent loss of coke
Samples for Laboratory Analysis
during the test. The back plate and side plates are rigidly fixed
D4621 Guide for Quality Management in an Organization
while the front plate is made removable to facilitate shovelling
That Samples or Tests Coal and Coke
the coke from the base plate into the box after each drop. It is
E11 SpecificationforWovenWireTestSieveClothandTest
important that the base plate be supported rigidly.
Sieves
NOTE 1—Mounting the base plate solidly on concrete is satisfactory.
4.1.3 Support Frame—Asupport frame and other appropri-
This test method is under the jurisdiction of ASTM Committee D05 on Coal
ate mechanism are provided so the box may be readily raised
and Coke and is the direct responsibility of Subcommittee D05.15 on Metallurgical
andloweredtofixedorreproducibleupperandlowerpositions.
Properties of Coal and Coke.
No part of the supporting frame is to impede the free fall of
Current edition approved April 1, 2004. Published April 2004. Originally
coke nor protrude into the 1.22- by 0.965-m (48- by 38-in.)
approved in 1972. Last previous edition approved in 1999 as D3038 – 93 (1999).
DOI: 10.1520/D3038-93R04.
area of the base plate. When in the upper position, the inside
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
surface of the bottom of the box must be 1.83 m (6 ft) above
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the plate. The lower position shall be one convenient for
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. loading and reloading the box without breakage of coke. The
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D3038–93 (2004)
FIG. 1 Shatter Test Machine
NOTE 3—For Procedure A, in which the coke samples do not contain
box may be constrained to only vertical movement by suitable
more than 50 % plus 100-mm (4-in.) sizes, the 150-mm (6-in.), 125-mm
lateral guides and may be conveniently supported by wire rope
(5-in.), and 100-mm (4-in.) sieves may be excluded. For Procedure B, in
passing over pulleys. Counterweighting will reduce labor.
which the coke samples contain more than 50 % plus 100-mm (4-in.)
4.1.4 Containers—Conventional galvanized-iron tubs are
sizes, it is permissible to exclude the 37.5-mm (1 ⁄2-in.), 25-mm (1-in.),
convenientcontainersinwhichtocollectandweighcokeinthe
and the 12.5-mm ( ⁄2-in.) sieves.
various stages of the test.
4.1.6 Weighing Scale—For Procedure A, a scale having a
4.1.5 Sieves—Woven-wire square-mesh sieves of the fol-
capacity of 35 kg (75 lb) is to be provided and be graduated so
lowing sizes: 150 mm (6 in.), 125 mm (5 in.), 100 mm (4 in.),
that it may be read directly, without interpolation, to 0.05 kg
75 mm (3 in.), 50 mm (2 in.), 37.5 mm (1 ⁄2 in.), 25 mm (1 in.),
(0.1lb).Thesensitivityistobenotlessthan0.025kg(0.05lb).
and12.5mm( ⁄2in.).ThesievesmustconformtoSpecification
4.1.6.1 For Procedure B, this scale is to have a capacity of
E11.
60 kg (125 lb) graduated to 0.1 kg (0.2 lb) and have a
NOTE 2—The 150-mm (6-in.) and the 125-mm (5-in.) sieves are not
sensitivity not less than 0.05 kg (0.10 lb).
defined in Specifications E11 but shall have nominal wire diameters of
7.11 mm (0.2800 in.) and 6.73 mm (0.2650 in.), respectively, and have
5. Sampling
permissible variations in average opening, permissible variations for not
5.1 The gross sample of coke must be taken as close as
more than 5 % of openings, and maximum variation in individual
openings equivalent to that specified for the 100-mm (4-in.) sieve. possible to the point of interest, include all sizes, and be
D3038–93 (2004)
collected in such a way as to be representative of the total lot plus 50-mm (2-in.) part of the gross sample as found in a
or quantity in question, in accordance with Practice D346. preliminary size analysis to which the whole of the gross
5.2 For ProcedureA, the minimum size of the gross sample sample is subjected.
must be such as to yield 68 to 75 kg (150 to 165 lb) of coke 7.2 This preliminary size analysis is carried out, mainly, by
retained on 50-mm (2-in.) sieve when processed according to hand placing, a process in which each piece of coke is handled
the procedure set forth in Section 7. and counted as undersize if it will, in some position and
withoutforcing,passthroughthesieve.Proceedinginthisway,
5.2.1 For Procedure B, this sample must be such as to yield
atleast140kg(300lb)ofcokeretainedon75-mm(3-in.)sieve andtakingcareinalloperationstoavoidbreakage,separatethe
gross sample into the following fractions which are segregated
when processed in accordance with the procedure set forth in
Section 11. appropriately in tubs:
5.2.2 If experience shows that more than three tests are Passing Retained on Percent
usually necessary, the quantity of gross sample will need to be
__________________ 100-mm (4-in.) sieve ________
increased appropriately.
100-mm (4-in.) sieve 75-mm (3-in) sieve ________
75-mm (3-in.) sieve 50-mm (2-in.) sieve ________
5.3 The gross sample is to be assembled from increments
50-mm (2-in.) sieve ________
regularly and systematically collected, so that the entire quan-
tity of coke sampled will be represented proportionately in the
7.3 Make appropriate weighings so that the percentage of
gross sample, and with such frequency that a gross sample of
each size in the portion of the original gross sample retained on
at least the minimum required amount is collected.
a 50.8-mm (2-in.) sieve can be calculated.
5.4 Increments may be collected from a stopped conveyor
7.4 Reconstitute each sample for testing, 23 to 25 kg (50 to
belt or by interposing a collecting container into a moving
55 lb), from the segregated sizes above 50 mm (2 in.). Select
stream while the coke is being loaded or unloaded or otherwise
pieces at random from the total amount of each size, the
transported. The increment collected from a stopped belt must quantity of each size fraction taken being based on the data of
be all the coke on the belt between parallel planes separated by
the preliminary size analysis.
a distance 2.5 times the nominal top size of the coke. In the 7.5 If the coke contains 5 % of moisture or less, test the
same way, when collecting from a moving stream, the collect-
sample as is. Wetter coke is to be dried to 5 % or less before
ing container must be as wide as the stream, or be moved testing.
uniformly through its whole width and have a mouth opening
2.5 times the nominal top size of the coke. The nominal top
8. Procedure
size, for this method, is that nearest standard sieve for which
8.1 Weigh 23 to 25 kg (50 to 55 lb) of the prepared
about 5 % of the coke is oversize.
reconstituted sample to the nearest 0.05 kg (0.1 lb). Transfer
5.5 Samples collected from the surface of coke in piles,
the coke carefully into the box of the shatter test apparatus by
bins, cars, ships, or barges, are in general unreliable because of
either inserting the container into the box
...
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