ASTM D3402-93
(Test Method)Standard Test Method for Tumbler Test for Coke
Standard Test Method for Tumbler Test for Coke
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
Standard Test Method for
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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 (ε) 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
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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
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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
diameterand455mm(18in.)ininsidewidthandmadeofplate
2. Referenced Documents
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at least 6 mm ( ⁄4 in.) thick. The machine may be constructed
2.1 ASTM Standards:
asadoubledrummountedonacommonshaftsothatduplicate
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D293 Test Method for the Sieve Analysis of Coke
coke samples may be tested at the same time. Two equally
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D294 Tumbler Test for Coke
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spaced 50 by 50 by 6-mm (2 by 2 by ⁄4-in. ) steel angles
D346 Practice for Collection and Preparation of Coke
extending across the width of each drum are solidly fastened
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Samples for Laboratory Analysis
inside each drum as shown. These angles are fastened to the
D4621 GuideforAccountabilityandQualityControlinthe
shell so that the attached legs point away from the direction of
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Coal Analysis Laboratory
rotation, thus giving a clear unobstructed shelf for lifting the
E11 Specification for Wire-Cloth Sieves for Testing Pur-
coke. At least one door must be provided in each drum for
4
poses
charging and discharging the coke sample. This door prefer-
E323 Specification for Perforated-Plate Sieves for Testing
ablyshouldextendnearlyacrossthewidthofeachdrum.Asan
2
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
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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
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ThistestmethodisunderthejurisdictionofASTMCommitteeD-5onCoaland
the drum providing smooth inner surfaces. It is desirable that
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
2
Annual Book of ASTM Standards, Vol 05.05.
mustbereplacedwhenthewearreducedthethicknessto3mm
3
Discontinued: see 1976 Annual Book of ASTM Standards, Part 26.
4
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D3402–93
FIG. 1 Tumbler Test Apparatus
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( ⁄8 in.)inanyarea.Theliftanglesmustbereplacedwhenthey larger pieces, in order to obtain a sample that will pass the
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wear t
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