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ASTM D2639-04

(Test Method)

Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler Plastometer

Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler Plastometer

SCOPE
1.1 This test method gives a relative measure of the plastic behavior of coal when heated under prescribed conditions. This test method may be used to obtain semiquantitative values of the plastic properties of coals and blends used in carbonization and in other situations where determination of plastic behavior of coals is of practical importance.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.

General Information

Status
Historical
Publication Date
31-Oct-2004
ICS
75.160.10 - Solid fuels
Technical Committee
D05 - Coal and Coke
Drafting Committee
D05.15 - Metallurgical Properties of Coal and Coke
Current Stage
Ref Project

Relations

Replaces
ASTM D2639-98 - Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler Plastometer
Effective Date
01-Nov-2004
Replaced By
ASTM D2639-04e1 - Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler Plastometer
Effective Date
01-Nov-2004
Referred By
ASTM D121-15 - Standard Terminology of Coal and Coke
Effective Date
01-Nov-2004

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ASTM D2639-04 - Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler PlastometerASTM D2639-04 - Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler Plastometer
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ASTM D2639-04 - Standard Test Method for Plastic Properties of Coal by the Constant-Torque Gieseler Plastometer
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 2639–04
Standard Test Method for
Plastic Properties of Coal by the Constant-Torque Gieseler
1
Plastometer
This standard is issued under the fixed designation D 2639; 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 3.1.4 maximum fluidity temperature, n—as used in this test
method, the temperature at which stirrer rotation rate reaches a
1.1 This test method covers a relative measure of the plastic
maximum value.
behaviorofcoalwhenheatedunderprescribedconditions.This
3.1.5 plastic range, n—difference between the solidification
test method may be used to obtain semiquantitative values of
temperature and the initial softening temperatures.
the plastic properties of coals and blends used in carbonization
3.1.6 solidification temperature, n—as used in this test
and in other situations where determination of plastic behavior
method, the temperature at which the the first zero ddpm is
of coals is of practical importance.
reached after the last stirrer rotation.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
4. Summary of Test Method
only.
4.1 The plastometer measures the plastic properties of coals
1.3 This standard does not purport to address all of the
by the use of a constantly applied torque on a stirrer placed in
safety concerns, if any, associated with its use. It is the
a crucible into which the coal is charged. The crucible is
responsibility of the user of this standard to establish appro-
immersed in a bath and the temperature increased uniformly.
priate safety and health practices and determine the applica-
The rates of movement of the stirrer are recorded in relation to
bility of regulatory limitations prior to use.
increase in temperature.
2. Referenced Documents
5. Significance and Use
2
2.1 ASTM Standards:
5.1 Reliablevaluesoftheplasticpropertiesofcoalsareused
D 2013 Practice of Preparing Coal Samples for Analysis
to predict or explain the behavior of a coal or blends during
D 2234 Practice for Collection of a Gross Sample of Coal
carbonization or in other processes such as gasification, lique-
3. Terminology faction, and combustion.
3.1 Definitions:
6. Apparatus
3.1.1 dial division per minute, n—as used in this test
6.1 Gieseler Plastometer—The apparatus shall consist of
method, a measure of stirrer rotation rate. There are 100 dial
the following:
divisions for each full 360° rotation of the stirrer. Stirrer
6.1.1 Retort—A steel retort consisting of four parts as
rotation rate is total dial divisions turned by the stirrer in a one
shown in Fig. 1.
minute time period.
6.1.2 Retort Crucible, cylindrical, 21.4 6 0.08 mm
3.1.2 initial softening temperature, n—as used in this test
(0.844 6 0.003 in.) in inside diameter and 35.0 mm (1.38 in.)
method, the temperature at which the stirrer rotation rate first
in depth, with exterior threads for joining the crucible to the
reaches 1.0 dial divisions per minute.
crucible cover. The crucible shall have a 2.38- 6 0.02-mm
3.1.3 maximum fluidity, n—as used in this test method, the
(0.094- 6 0.001-in.) diameter notch in the center of its inside
measured maximum stirrer rotation rate, in dial divisions per
base to serve as a seat for the stirrer.
minute.
6.1.3 Retort Crucible Cover, with interior threads for join-
ing the crucible cover to the crucible and exterior threads for
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal
joining the crucible cover to the barrel. The inside diameter of
and Coke and is the direct responsibility of Subcommittee D05.15 on Metallurgical
the hole which accommodates the stirrer is 9.53 6 0.08 mm
Properties of Coal and Coke.
(0.375 6 0.003 in.).
Current edition approved Nov. 1, 2004. Published November 2004. Originally
e1
approved in 1967. Last previous edition approved in 1998 as D 2639–98 . 6.1.4 Barrel, 121 mm (4.75 in.) long and having an inside
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
diameter of 9.53 6 0.08 mm (0.375 6 0.003 in.). The top end
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
of the barrel shall be 12.7 mm (0.500 in.) in inside diameter to
Standards volume information, refer to the standard’s Document Summary page on
a depth sufficient to allow clearance for the axle of the
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D 2639–04
FIG. 1 Retort Assembly
2

---------------------- Page: 2 ----
...

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