ASTM D7454-14e1

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Designation: D7454 − 14
Standard Test Method for
Determination of Vibrated Bulk Density of Calcined
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Petroleum Coke using a Semi-Automated Apparatus
This standard is issued under the fixed designation D7454; 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.
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ε NOTE—Research Report information was added editorially to the Precision and Bias section in September 2014.
1. Scope* 3.1.1 as-calcined particles, n—of coke, those particles that
have not been subject to laboratory crushing.
1.1 This test method covers the determination of bulk
3.1.2 bulk density, n—of coke, the ratio of the mass of a
density of a representative 2-kg sample of calcined petroleum
collection of particles of a specified particle size range to the
coke, after vibration to increase compaction, using a semi-
volume occupied.
automatic apparatus.
3.1.3 laboratory crushed particles, n— of coke, those par-
1.2 The procedure is applied, but not limited, to particles
ticles of petroleum coke that have been crushed in the
passing through a 4.75-mm opening sieve and retained on a
laboratory.
1.18-mm opening sieve. Further, the procedure is applied, but
not limited, to a specific test sample having particles passing
4. Summary of Test Method
through a 0.85-mm opening sieve and retained on a 0.425-mm
opening sieve. This procedure could also be applied to other 4.1 The natural 4.75 by 1.18-mm fraction of the original
sieve fractions being agreed on in the aluminum industry as
cokeisseparatedfromthesamplebymanualscreening,ground
specified in Annex A1. to 0.85 by 0.425 mm, and fed at a controlled rate into a
graduated cylinder on a vibrating table until the coke reaches
1.3 The values stated in SI units are to be regarded as
the 50-mL mark. The collected coke is weighed and the bulk
standard. No other units of measurement are included in this
density is calculated and reported in g/mL.
standard.
4.2 The procedure is empirical; close adherence to the
1.4 This standard does not purport to address all of the
technique and apparatus is necessary to ensure reproducible
safety concerns, if any, associated with its use. It is the
results. To provide comparable results in different locations,
responsibility of the user of this standard to establish appro-
exact adjustments of operating parameters are required using
priate safety and health practices and determine the applica-
reference samples.
bility of regulatory limitations prior to use.
2. Referenced Documents
5. Significance and Use
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2.1 ASTM Standards:
5.1 Vibrated bulk density (VBD) is an indicator of calcined
E11 Specification for Woven Wire Test Sieve Cloth and Test
petroleum coke porosity, which affects its suitability for use in
Sieves
pitch-bonded carbon applications. (Warning—Vibrated bulk
E691 Practice for Conducting an Interlaboratory Study to
density for a sample of calcined petroleum coke is strongly
Determine the Precision of a Test Method
dependent upon average particle size and particle size range.
Bulk density tends to increase with decreasing coke size. A
3. Terminology
narrowparticlesizerangeforthistestminimizesthepossibility
3.1 Definitions:
for variation due to skewing of the test sample toward either
screen defining the sample.)
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This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
6. Apparatus
SubcommitteeD02.05onPropertiesofFuels,PetroleumCokeandCarbonMaterial.
Current edition approved May 1, 2014. Published May 2014. Originally 6.1 Pan Balance—Accurate to 0.1 g, with a capacity of
approved in 2008. Last previous edition approved in 2008 as D7454 – 08. DOI:
2.0 kg.
10.1520/D7454-14E01.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or 6.2 Riffle Sampler—Enclosed drawer, approximately 380 by
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
290 by 360 mm, 24-slot.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 6.3 Sieves—Meeting Specification E11.
*A Summary of Changes section appears at the end of this standard
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D7454 − 14
6.4 Sieve Shaker—Electrical drive with an automatic timer; 6.7.10 Line Stabilizer (Optional)—Use if the noise on the
should have a rotating and tapping action. power line is significant and affects the apparatus performance.
6.7.11 Round Level.
6.5 Roller Crusher—Laboratory type; glass har
...