ASTM D3402-93(2001)
(Test Method)Standard Test Method for Tumbler Test for Coke
Standard Test Method for Tumbler Test for Coke
SIGNIFICANCE AND USE
Coke undergoes various degrees of degradation during removal from coke ovens, transportation, and its decent within a blast furnace to the combustion zone. These processes subject the coke to impact and abrasion. This test method is a relative measure of the resistance of coke to breakage when subjected to these degradation processes.
SCOPE
1.1 This test method describes a procedure for obtaining a relative measure of the resistance to degradation of coke by impact and abrasion.
1.2 Standard Procedure—This procedure uses a coke sample sized to -75 mm (-3 in.) and +50 mm (+2 in.).
1.3 Alternative Procedure—This procedure using coke sized 50% of 63 by 50 mm (2 1/2 by 2 in.) and 50% of 50 by 37.5 mm (2 by 1 1/2 in.).
1.4 The values stated in SI units shall be regarded as standard. Inch-pound units shall be accepted on an equivalent basis.
1.5 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.
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Designation:D3402–93 (Reapproved 2001)
Standard Test Method for
Tumbler Test for Coke
This standard is issued under the fixed designation D3402; 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 andthehardnessfactor,aredeterminedbysieveanalysisofthe
cokeaftertreatment.Studieshaveindicatedthatthereisnoreal
1.1 This test method describes a procedure for obtaining a
difference in the stability factor as determined by the standard
relative measure of the resistance to degradation of coke by
andalternativeprocedures.Thealternativeprocedureproduces
impact and abrasion.
hardness factor results averaging slightly higher than the
1.2 Standard Procedure—This procedure uses a coke
standard procedure.
sample sized to−75 mm (−3 in.) and+50 mm (+2 in.).
1.3 Alternative Procedure—This procedure using coke
4. Significance and Use
sized 50% of 63 by 50 mm (2 ⁄2 by 2 in.) and 50% of 50 by
4.1 Coke undergoes various degrees of degradation during
37.5 mm (2 by 1 ⁄2 in.).
removal from coke ovens, transportation, and its decent within
1.4 The values stated in SI units shall be regarded as
ablastfurnacetothecombustionzone.Theseprocessessubject
standard. Inch-pound units shall be accepted on an equivalent
the coke to impact and abrasion. This test method is a relative
basis.
measure of the resistance of coke to breakage when subjected
1.5 This standard does not purport to address all of the
to these degradation processes.
safety problems, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
5.1 Tumbler Machine (see Fig. 1)—The tumbler machine
bility of regulatory limitations prior to use.
consistingofacylindricalsteeldrum910mm(36in.)ininside
2. Referenced Documents diameterand455mm(18in.)ininsidewidthandmadeofplate
at least 6 mm ( ⁄4 in.) thick. The machine may be constructed
2.1 ASTM Standards:
asadoubledrummountedonacommonshaftsothatduplicate
D293 Test Method for the Sieve Analysis of Coke
3 coke samples may be tested at the same time. Two equally
D294 Tumbler Test for Coke
spaced 50 by 50 by 6-mm (2 by 2 by ⁄4-in. ) steel angles
D346 Practice for Collection and Preparation of Coke
2 extending across the width of each drum are solidly fastened
Samples for Laboratory Analysis
inside each drum as shown. These angles are fastened to the
D4621 Guide for Quality Mangament in an Organization
shell so that the attached legs point away from the direction of
that Samples or Tests Coal and Coke
rotation, thus giving a clear unobstructed shelf for lifting the
E11 Specification for Wire-Cloth Sieves for Testing Pur-
4 coke. At least one door must be provided in each drum for
poses
charging and discharging the coke sample. This door prefer-
E323 Specification for Perforated-Plate Sieves for Testing
2 ablyshouldextendnearlyacrossthewidthofeachdrum.Asan
Purposes
alternative, a door in the side of the drum is permissible.
3. Summary of Test Method During the test the door must be fastened rigidly to the shell
andmustfitintotheshellinordertohaveasmoothcontinuous
3.1 Asample of dry coke of designated size is tumbled in a
inner surface.Adust-tight gasket must be provided to prevent
rotating drum at a specified turning rate for a specified number
lossoftheabradedfinesduringthetest.Toprovideforrotation,
of revolutions. Two indexes of its strength, the stability factor
the drum is mounted on stub axles about 37.5 mm (1 ⁄2 in.) in
diameter by means of flanges welded or bolted to the ends of
This test method is under the jurisdiction of ASTM Committee D05 on Coal
the drum providing smooth inner surfaces. It is desirable that
and Coke and is the direct responsibility of Subcommittee D05.15 on Plasticity and
theapparatusbefittedwitharevolutioncounterandpreferably
Swelling of Coal.
beequippedwithanautomaticdevicetostopthedrumafterthe
Current edition approved Jan. 15, 1993. Published March 1993. Originally
published as D3402–75. Last previous edition D3402–81.
specified number of revolutions (1400). The tumbler drum
Annual Book of ASTM Standards, Vol 05.05.
mustbereplacedwhenthewearreducedthethicknessto3mm
Discontinued: see 1976 Annual Book of ASTM Standards, Part 26.
Annual Book of ASTM Standards, Vol 14.02.
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D3402
FIG. 1 Tumbler Test Apparatus
( ⁄8 in.)inanyarea.Theliftanglesmustbereplacedwhenthey larger pieces, in order to obtain a sample that will pass the
wear to less than 48 mm (1 ⁄8 in.). 75-mmsieveandberetainedonthe50-mmsieve.Insizingthe
5.2 Sieves, for sieving the coke before and after the tumbler
sample, hand place to determine whether in any position a
test. Square-mesh sieves having 75-mm (3-in.), 63-mm (2 ⁄2-
piece of coke passes the sieve. If it is necessary to crush large
in.), 50-mm (2-in.), 37.5-mm (1 ⁄2-in.), 25-mm (1-in.), and
coke (+75 mm or+3 in.) in order to obtain sufficient coke for
63-mm ( ⁄4-in.) actual openings between the wires to be used.
testing it so note in the report. Dry the coke to less than 1%
The sieves shall conform to Specification E11.
moisture.
7.2 Size the alternate procedure sample by the sa
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