ASTM D3038-93(2010)
(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 6-9.
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 10-13.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
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 2010)
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 3. Significance and Use
1.1 This test method covers the application of two proce- 3.1 The values determined in this test, when evaluated in
dures for the determination of the property of coke of with- terms of pertinent experience with other cokes, may be used as
standing breakage when dropped under specified test condi- indications of the extent to which a given coke will break in
tions. conventional transit and handling beyond the point of sam-
pling.
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
4. Apparatus
mm (2 in.). Procedure A appears in Sections6–9.
4.1 Shatter Apparatus, including (1) box, (2) base plate, (3)
1.3 Procedure B, used when the coke sample contains more
support frame, (4) containers, (5) sieves, and (6) weighing
than 50 % 100 mm (4 in.) after removal of coke smaller than
scales (see Fig. 1).
50 mm (2 in.). Procedure B appears in Sections10–13.
4.1.1 Box, 455 mm (18 in.) in width, 710 mm (28 in.) in
1.4 The values stated in SI units are to be regarded as
length, and 380 mm (15 in.) in depth. The bottom of the box
standard. The values given in parentheses are for information
shall consist of two doors, hinged lengthwise and provided
only.
with a trip latch for rapid opening. The doors are of 6-mm
( ⁄4-in.) plate and are mounted on freely working hinges so that
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the they swing open rapidly and do not impede the fall of the coke.
The sides of the box are made of plate at least 3 mm ( ⁄8 in.)
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- thick.
4.1.2 Base Plate—Steel plate, 1.22 m (48 in.) in length, 965
bility of regulatory limitations prior to use.
mm (38 in.) in width, and not less than 13 mm ( ⁄2 in.) thick.
2. Referenced Documents
Vertical plates at least 200 mm (8 in.) high are placed on all
2.1 ASTM Standards:
four sides to form a shallow box and to prevent loss of coke
D121 Terminology of Coal and Coke during the test. The back plate and side plates are rigidly fixed
D293 Test Method for the Sieve Analysis of Coke
while the front plate is made removable to facilitate shovelling
D346 Practice for Collection and Preparation of Coke the coke from the base plate into the box after each drop. It is
Samples for Laboratory Analysis
important that the base plate be supported rigidly.
D4621 Guide for Quality Management in an Organization
NOTE 1—Mounting the base plate solidly on concrete is satisfactory.
That Samples or Tests Coal and Coke (Withdrawn 2010)
4.1.3 Support Frame—A support frame and other appropri-
E11 Specification for Woven Wire Test Sieve Cloth and Test
ate mechanism are provided so the box may be readily raised
Sieves
andloweredtofixedorreproducibleupperandlowerpositions.
E323 Specification for Perforated-Plate Sieves for Testing
No part of the supporting frame is to impede the free fall of
Purposes
coke nor protrude into the 1.22- by 0.965-m (48- by 38-in.)
area of the base plate. When in the upper position, the inside
This test method is under the jurisdiction of ASTM Committee D05 on Coal
surface of the bottom of the box must be 1.83 m (6 ft) above
and Coke and is the direct responsibility of Subcommittee D05.15 on Metallurgical
Properties of Coal and Coke.
the plate. The lower position shall be one convenient for
Current edition approved May 1, 2010. Published May 2010. Originally
loading and reloading the box without breakage of coke. The
approved in 1972. Last previous edition approved in 2004 as D3038 – 93 (2004).
box may be constrained to only vertical movement by suitable
DOI: 10.1520/D3038-93R10.
lateral guides and may be conveniently supported by wire rope
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
passing over pulleys. Counterweighting will reduce labor.
Standards volume information, refer to the standard’s Document Summary page on
4.1.4 Containers—Conventional galvanized-iron tubs are
the ASTM website.
3 convenientcontainersinwhichtocollectandweighcokeinthe
The last approved version of this historical standard is referenced on
www.astm.org. various stages of the test.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3038 − 93 (2010)
FIG. 1 Shatter Test Machine
4.1.5 Sieves—Woven-wire square-mesh sieves of the fol- 4.1.6 Weighing Scale—For Procedure A, a scale having a
lowing sizes: 150 mm (6 in.), 125 mm (5 in.), 100 mm (4 in.), capacity of 35 kg (75 lb) is to be provided and be graduated so
75 mm (3 in.), 50 mm (2 in.), 37.5 mm (1 ⁄2 in.), 25 mm (1 in.), that it may be read directly, without interpolation, to 0.05 kg
and12.5mm( ⁄2in.).ThesievesmustconformtoSpecification (0.1lb).Thesensitivityistobenotlessthan0.025kg(0.05lb).
E11. 4.1.6.1 For Procedure B, this scale is to have a capacity of
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
more than 5 % of openings, and maximum variation in individual
5.1 The gross sample of coke must be taken as close as
openings equivalent to that specified for the 100-mm (4-in.) sieve.
possible to the point of interest, include all sizes, and be
NOTE 3—For Procedure A, in which the coke samples do not contain
more than 50 % plus 100-mm (4-in.) sizes, the 150-mm (6-in.), 125-mm collected in such a way as to be representative of the total lot
(5-in.), and 100-mm (4-in.) sieves may be excluded. For Procedure B, in
or quantity in question, in accordance with Practice D346.
which the coke samples contain more than 50 % plus 100-mm (4-in.)
1 5.2 For ProcedureA, the minimum size of the gross sample
sizes, it is permissible to exclude the 37.5-mm (1 ⁄2-in.), 25-mm (1-in.),
and the 12.5-mm ( ⁄2-in.) sieves. must be such as to yield 68 to 75 kg (150 to 165 lb) of coke
D3038 − 93 (2010)
retained on 50-mm (2-in.) sieve when processed according to in the portion tested is to be in the same proportions as in the
the procedure set forth in Section 7. plus 50-mm (2-in.) part of the gross sample as found in a
5.2.1 For Procedure B, this sample must be such as to yield preliminary size analysis to which the whole of the gross
atleast140kg(300lb)ofcokeretainedon75-mm(3-in.)sieve sample is subjected.
when processed in accordance with the procedure set forth in
7.2 This preliminary size analysis is carried out, mainly, by
Section 11.
hand placing, a process in which each piece of coke is handled
5.2.2 If experience shows that more than three tests are
and counted as undersize if it will, in some position and
usually necessary, the quantity of gross sample will need to be
withoutforcing,passthroughthesieve.Proceedinginthisway,
increased appropriately.
andtakingcareinalloperationstoavoidbreakage,separatethe
5.3 The gross sample is to be assembled from increments gross sample into the following fractions which are segregated
regularly and systematically collected, so that the entire quan-
appropriately in tubs:
tity of coke sampled will be represented proportionately in the
Passing Retained on Percent
gross sample, and with such frequency that a gross sample of
__________________ 100-mm (4-in.) sieve ________
at least the minimum required amount is collected.
100-mm (4-in.) sieve 75-mm (3-in) sieve ________
75-mm (3-in.) sieve 50-mm (2-in.) sieve ________
5.4 Increments may be collected from a stopped conveyor
50-mm (2-in.) sieve ________
belt or by interposing a collecting container into a moving
7.3 Make appropriate weighings so that the percentage of
stream while the coke is being loaded or unloaded or otherwise
each size in the portion of the original gross sample retained on
transported. The increment collected from a stopped belt must
a 50.8-mm (2-in.) sieve can be calculated.
be all the coke on the belt between parallel planes separated by
a distance 2.5 times the nominal top size of the coke. In the
7.4 Reconstitute each sample for testing, 23 to 25 kg (50 to
same way, when collecting from a moving stream, the collect-
55 lb), from the segregated sizes above 50 mm (2 in.). Select
ing container must be as wide as the stream, or be moved
pieces at random from the total amount of each size, the
uniformly through its whole width and have a mouth opening
quantity of each size fraction taken being based on the data of
2.5 times the nominal top size of the coke. The nominal top
the preliminary size analysis.
size, for this method, is that nearest standard sieve for which
7.5 If the coke contains 5 % of moisture or less, test the
about 5 % of the coke is oversize.
sample as is. Wetter coke is to be dried to 5 % or less before
5.5 Samples collected from the surface of coke in piles,
testing.
bins, cars, ships, or barges, are in general unreliable because of
size segregation and should not be used for determining
8. Procedure
conformance to specifications unless the purchaser and the
8.1 Weigh 23 to 25 kg (50 to 55 lb) of the prepared
seller so agree. As it may be very
...
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