ASTM D5709-95(2005)
(Test Method)Standard Test Method for Sieve Analysis of Petroleum Coke
Standard Test Method for Sieve Analysis of Petroleum Coke
SIGNIFICANCE AND USE
The test method concerns the sieving of coke into designated size fractions for the purpose of characterizing the material as to its particle size distribution. It requires the use of standard sieves, standard sampling methods, standard sample preparation methods, and a minimum initial sample mass based on lot topsize. Suggestions are given for industry typical sieve stacks for both green and calcined petroleum coke.
Particle size distribution is significant in that many physical characteristics of a coke are related to such a distribution including bulk density and surface area. Nuisance characteristics, such as excessive fines in a lot, can also be controlled.
Results from this test method are useful in determining whether a coke lot meets purchase specifications, for classification purposes, and for quality control. The results of this test method can also be used to predict the performance of a particular lot of coke in a process.
SCOPE
1.1 This test method details a procedure for performing particle size distribution analysis by dry sieve testing on green petroleum coke with a topsize of no more than 75 mm and calcined petroleum coke with a topsize of no more than 25 mm. Size fractions go down to and include 4.75 mm for green petroleum coke and 75 m for calcined petroleum coke.
Note 1— To convert units, see Table 1 on nominal dimensions in Specification E 11. For example, 75 mm is approximately equivalent to a nominal sieve opening of 3 in. and 25 mm to a nominal sieve opening of 1 in. Likewise, 4.75 mm can be converted to approximately 0.187 in. and 75 microns to 0.0029 in.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. The sieve size is reported as U.S.A. standard test series in any units listed in Table 1 on nominal dimensions of Specification E 11, or their commercial size equivalents.
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
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5709–95 (Reapproved 2005)
Standard Test Method for
Sieve Analysis of Petroleum Coke
This standard is issued under the fixed designation D5709; 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 D4749 Test Method for Performing the Sieve Analysis of
Coal and Designating Coal Size
1.1 This test method details a procedure for performing
E11 SpecificationforWovenWireTestSieveClothandTest
particle size distribution analysis by dry sieve testing on green
Sieves
petroleum coke with a topsize of no more than 75 mm and
calcinedpetroleumcokewithatopsizeofnomorethan25mm.
3. Terminology
Size fractions go down to and include 4.75 mm for green
3.1 Definitions of Terms Specific to This Standard:
petroleum coke and 75 µm for calcined petroleum coke.
3.1.1 bulk sample—the reduced and divided representative
NOTE 1—To convert units, see Table 1 on nominal dimensions in
portion of the gross sample as prepared for shipment to and
Specification E11. For example, 75 mm is approximately equivalent to a
received by a laboratory, to be prepared for analysis.
nominal sieve opening of 3 in. and 25 mm to a nominal sieve opening of
3.1.2 gross sample—the original, uncrushed, representative
1 in. Likewise, 4.75 mm can be converted to approximately 0.187 in. and
portion taken from a shipment or lot of coke.
75 microns to 0.0029 in.
3.1.3 lot—a quantity of coke to be represented by a gross
1.2 The values stated in SI units are to be regarded as
sample.
standard. No other units of measurement are included in this
3.1.4 representative sample—a sample collected in such a
standard. The sieve size is reported as U.S.A. standard test
manner that every particle in the lot to be sampled is equally
series in any units listed in Table 1 on nominal dimensions of
represented in the gross sample.
Specification E11, or their commercial size equivalents.
3.1.5 topsize—the size of the opening of that sieve of a
1.3 This standard does not purport to address all of the
series with the smallest opening upon which is cumulatively
safety concerns, if any, associated with its use. It is the
retained a total of less than 5 % of the sample. This defined
responsibility of the user of this standard to establish appro-
topsizeisnottobeconfusedwiththesizeofthelargestparticle
priate safety and health practices and determine the applica-
in a lot.
bility of regulatory limitations prior to use.
4. Summary of Test Method
2. Referenced Documents
4.1 A representative coke sample is divided into ranges of
2.1 ASTM Standards:
particle size by the use of a series of square-holed sieves.
D346 Practice for Collection and Preparation of Coke
Samples for Laboratory Analysis
5. Significance and Use
D2013 Practice for Preparing Coal Samples for Analysis
5.1 The test method concerns the sieving of coke into
D2234/D2234M Practice for Collection of a Gross Sample
designated size fractions for the purpose of characterizing the
of Coal
material as to its particle size distribution. It requires the use of
D4057 Practice for Manual Sampling of Petroleum and
standard sieves, standard sampling methods, standard sample
Petroleum Products
preparationmethods,andaminimuminitialsamplemassbased
on lot topsize. Suggestions are given for industry typical sieve
stacks for both green and calcined petroleum coke.
This test method is under the jurisdiction of ASTM Committee D02 on 5.2 Particle size distribution is significant in that many
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
physical characteristics of a coke are related to such a
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
distribution including bulk density and surface area. Nuisance
Current edition approved May 1, 2005. Published June 2005. Originally
´1
characteristics, such as excessive fines in a lot, can also be
approved in 1995. Last previous edition approved in 2000 as D5709–95(2000) .
DOI: 10.1520/D5709-95R05.
controlled.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.3 Results from this test method are useful in determining
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
whether a coke lot meets purchase specifications, for classifi-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. cation purposes, and for quality control. The results of this test
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D5709–95 (2005)
TABLE 1 Industry Typical Sieves TABLE 2 Initial Minimum Test Sample Mass Requirements for
Sieve Analysis
Calcined Petroleum Coke Green Petroleum Coke
Initial Sample Expected
25.0 mm 25.0 mm
Topsize Type of Coke Mass Requirement, Relative
19.0 mm 12.5 mm
g Error, %
12.5mm 4.75mm
4.75 mm −4.75 mm 75 mm Green 50,000 6
3.35 mm
50 mm Green 30,000 6
2.36 mm 25 mm Green/Calcined 1,500 3
1.18 mm
19 mm Green/Calcined 1,300 1
600 µm
12.5 mm Green/Calcined 1,000 1
300 µm
4.75 mm Green/Calcined 800 1
212 µm
2.36 mm Green/Calcined 700 1
150 µm
1.18 mm Green/Calcined 500 1
75 µm
600 µm Green/Calcined 300 1
−75 µm 300 µm Green/Calcined 100 1
A
150 µm Green/Calcined 50 1
A
For topsize less than 150 µm, use an initial sample mass requirement of 50 g.
method can also be used to predict the performance of a
7.2.1 Use a batch type sieve shaker.
particular lot of coke in a process.
7.2.2 For sieving small quantities of coke or very fine coke
(below 70 mesh), use a laboratory type sieving machine.
6. Interferences
6.1 A sieve analysis is very sensitive to the sieve cloth and 8. Sample Preparation
sievecloth-frameintegrity.Minorseparationsofthesievecloth
8.1 A representative gross sample of the coke lot must be
from the frame such as one broken sieve wire, and slight
collected using appropriate procedures from Practice D346,
distortions of sieve wires, can cause serious inaccuracies in the
Test Methods D2234/D2234M, or Practice D4057.
final results of a sieve analysis.
(Warning—The gross sample must not be crushed or reduced
6.2 Blinding of or a reduction in the number of openings in
in topsize during the gross sample collection process or during
a sieve due to a collection of particles caught in the mesh can
subsequent divisions of the sample.)
introduce errors.
8.2 The gross sample is divided into a smaller bulk sample
6.3 Flooding or overloading of any sieve with particles
following guidelines in Test Methods D2234/D2234M. The
reduces the probability of any given particle encountering an
bulk sample must remain representative including no loss in
opening in the sieve.
topsize. Keeping in mind the initial sample mass requirements
(seeTable 2), the bulk sample must be at least twice the largest
7. Apparatus
minimum mass that you estimate will be required for the
analysis.
7.1 Sieves:
8.3 Upon delivery of the bulk sample to the laboratory, the
7.1.1 Sieves will be used in a descending size opening
sample shall be stored in a safe, dry location. Prevent any size
sequence, larger mesh openings above smaller.
degradation, loss of mass, or contamination of the sample until
7.1.1.1 TypicalsetsofsievestobeusedarelistedinTable1.
needed for the sieve analysis.
NOTE 2—Sets of sieves are often modified. Typically, specifications on
8.4 Immediately prior to the sieve analysis, examine the
sets of sieves are negotiated between the buyer and the seller. The actual
bulk sample determining whether it is dry and free flowing. If
sequence used by the operator performing the analysis can vary. For
not, use the air drying apparatus and drying procedure of
example, intermediate sieves can be chosen to avoid sieve flooding and to
Practice D2013.
make the sieving operation more efficient.Table 1 on nominal dimensions
in Specification E11 is to be used as a guide.
8.5 Determine the initial minimum test sample mass re-
quired for the analysis from Table 2.
7.1.2 A topsize sieve shall be used.
7.1.3 Wire sieve cloth and frames used will conform to
Specification E11.
The sole source of supply of the model number TS-1 Gilson Testing Screen
7.1.4 Wire composition and types of frames must be sized
machine known to the committee at this time is Gilson Company, Inc., P. O. Box
properly for potential sieving operations. Stainless steel sieve
677, Worthington, OH 43085-0677. If you are aware of alternative suppliers, please
provide this information toASTM International Headquarters. Your comments will
cloth is very resistant to distortion and preferred over softer
receive careful consideration at a meeting of the responsible technical committee,
metals.
which you may attend.
7.1.5 Collecting pans and sieve covers designed to fit the
The sole source of supply of the Ro-Tap Testing Sieve Shaker known to the
sieves are required. committee at this time isW. S.Tyler, Inc., 3200 Bessemer City Rd., P. O. Box 8900,
Gastonia, NC 28053-9065. If you are aware of alternative suppliers, please provide
7.1.6 Check Specification E11 for more details on standard
this information to ASTM International Headquarters. Y
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.