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ASTM D5003-06a(2011)

(Test Method)

Standard Test Method for Hardgrove Grindability Index (HGI) of Petroleum Coke

Standard Test Method for Hardgrove Grindability Index (HGI) of Petroleum Coke

SIGNIFICANCE AND USE
The HGI is used to predict the ranking of raw petroleum cokes or calcined petroleum cokes in industrial size mills used for crushing operations. The rankings are based on energy required and feed rate or both.
The HGI is also used to select raw petroleum cokes and coals that are compatible with each other when milled together in a blend so that segregation of the blend does not occur during particle size reduction.
SCOPE
1.1 This test method covers the determination of the hardgrove grindability index (HGI) of those petroleum cokes that contain no dedusting additive. The procedure for this test method is the same as in Test Method D409. Sections of this test method contain the significance and use of the HGI of petroleum coke, preliminary sample preparation procedures, and procedure and precision and bias data specific to petroleum coke.
Note 1—The size consistency (particle size distribution) of fluid petroleum coke is generally 100 % passing a 6.73 mm (No. 3) sieve and greater than 80 % passing a 2.00 mm (No. 10) sieve. Much of fluid cokes will pass a 0.59 mm (No. 30) sieve. Because of this fineness the HGI value is related to the coarser particles in fluid coke and large samples are required to prepare sufficient material of the correct particle size for Test Method D409.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 Exception—Hardgrove grindability index is unitless.
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
30-Apr-2011
ICS
75.160.10 - Solid fuels
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.05 - Properties of Fuels, Petroleum Coke and Carbon Material
Current Stage
Ref Project

Relations

Replaced By
ASTM D5003-06a(2017) - Standard Test Method for Hardgrove Grindability Index (HGI) of Petroleum Coke
Effective Date
01-Oct-2017

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ASTM D5003-06a(2011) - Standard Test Method for Hardgrove Grindability Index (HGI) of Petroleum CokeASTM D5003-06a(2011) - Standard Test Method for Hardgrove Grindability Index (HGI) of Petroleum Coke
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ASTM D5003-06a(2011) - Standard Test Method for Hardgrove Grindability Index (HGI) of Petroleum Coke
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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: D5003 − 06a (Reapproved 2011)
Standard Test Method for
1
Hardgrove Grindability Index (HGI) of Petroleum Coke
This standard is issued under the fixed designation D5003; 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.
INTRODUCTION
Introductionofpetroleumcokeintothecoalmarketinrecentyearshasnecessitatedtheuseofmany
ofthetestmethodsforcoalsolikedatawouldbeavailableforcomparisonandblendingpurposes.Test
Method D409 does not cover petroleum coke in its scope and its statements of precision and bias do
not include petroleum coke. This test method provides the procedures and precision and bias data for
the hardgrove grindability index (HGI) of petroleum coke. Use of this test method or Test Method
D409 produces the same value for the sample of petroleum coke being analyzed.
1. Scope 2. Referenced Documents
2
1.1 This test method covers the determination of the hard- 2.1 ASTM Standards:
grove grindability index (HGI) of those petroleum cokes that D409 Test Method for Grindability of Coal by the
contain no dedusting additive. The procedure for this test Hardgrove-Machine Method
method is the same as in Test Method D409. Sections of this D4930 Test Method for Dust Control Material on Calcined
test method contain the significance and use of the HGI of Petroleum Coke
petroleum coke, preliminary sample preparation procedures,
3. Terminology
andprocedureandprecisionandbiasdataspecifictopetroleum
coke.
3.1 Definitions:
3.1.1 calcined petroleum coke, n—petroleum coke that has
NOTE 1—The size consistency (particle size distribution) of fluid
been thermally treated to drive off the volatile matter and to
petroleum coke is generally 100 % passing a 6.73 mm (No. 3) sieve and
greater than 80 % passing a 2.00 mm (No. 10) sieve. Much of fluid cokes develop crystalline structure.
willpassa0.59mm(No.30)sieve.BecauseofthisfinenesstheHGIvalue
3.1.2 fluid coke, n—petroleum coke with a granular, micro-
is related to the coarser particles in fluid coke and large samples are
scopic layered structure resulting from injection of petroleum
required to prepare sufficient material of the correct particle size for Test
feedstock into a flowing, loose bed of coke particles.
Method D409.
1.2 The values stated in SI units are to be regarded as 3.1.3 Hardgrove Grindability Index, HGI, unitless, n—in
petroleum coke technology,measurementoftherelativeeaseof
standard. No other units of measurement are included in this
standard. pulverizing a raw petroleum coke or green petroleum coke in
comparison with coal standards. The higher the HGI value, the
1.2.1 Exception—Hardgrove grindability index is unitless.
easier the petroleum coke is to grind.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1.4 petroleum coke, n—solid, carbonaceous residue pro-
duced by thermal decomposition of heavy petroleum fractions
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- or cracked stocks, or both.
bility of regulatory limitations prior to use.
3.1.5 raw petroleum coke, n—petroleum coke that has not
been calcined.
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
2
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2011. Published August 2011. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1989. Last previous edition approved in 2006 as D5003–06a. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D5003-06A. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5003 − 06a (2011)
4. Summary of Test Method sieve. Heating to 10°C above the boiling point of the solvent
used or application of vacuum is satisfactory for the removal.
4.1 The sample of petroleum coke is reduced (crushed) to
produce a high yield of particles passing a 1.19 mm (No. 16)
7. Sampling and Sample Preparation
sieveandretainedona0.59mm(No.30)sieve.Theseparticles
7.1 A guide for sampling petroleum cokes and calcined
are reduced in the hardgrove grindability machine according to
3
coke and a practice for preparing samples of petroleum coke
Test Method D409. The quantity of particles retained on a
are i
...

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5.1 Vibrated bulk density, VBD, is an indicator of calcined petroleum coke porosity, which affects its suitability for use in pitch-bonded carbon applications. (Warning—Vibrated bulk density for a sample of calcined petroleum coke is strongly dependent upon average particle size and particle size range. Bulk density tends to increase with decreasing coke size. A narrow particle size range for this test minimizes the possibility for variation due to skewing of the test sample toward either screen defining the sample. Particle size range tested should be agreed upon by the purchaser and supplier.)  
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1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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5.2 Results from this test method are used in determining coke specifications, classification purposes, and for quality control.
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5.1 The density of petroleum coke directly influences the physical and chemical properties of the manufactured carbon and graphite artifacts for which it is used. Density, therefore, is a major quality specification of calcined petroleum coke and is used as a control in coke calcination.
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1.1 This test method covers the determination of the real density (RD) of calcined petroleum coke. Real density, by definition, is obtained when the particle size of the test specimen is smaller than 75 μm (No. 200 sieve).  
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ASTM D6969-23(Practice)
Standard Practice for Preparation of Calcined Petroleum Coke Samples for Analysis

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4.1 This practice provides field personnel and laboratories with standard procedures for dividing, reducing, and mixing gross samples and intermediate samples, such that the resulting prepared analysis samples are more uniform from laboratory to laboratory. Adherence to these guidelines is expected to provide significant reduction in interlaboratory variability.
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1.1 This practice covers the preparation procedures necessary for the reduction and division of calcined petroleum coke samples in order to generate appropriate analytical samples upon which physical and chemical analytical tests will be performed.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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5.1 The test is designed to quantify the amount of dust control material added to calcined coke. The dust control material is applied to calcined coke to help maintain a dust-free environment. It generally serves no other useful purpose. It adds mass to the coke and can have a negative effect on the quality of carbon and graphite artifacts made from the treated coke. For these reasons the coke customer wants to know the amount of dust control material on the coke and can specify a maximum level.
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Note 1: Methylene chloride is the most popular solvent for removing dust control oil at the time this procedure is being written. Toluene and methyl chloroform, however, have been used with equal results on all cokes tested which have included only those sprayed with aromatic or waxy materials.  
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1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see Section 7.  
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5.1 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.  
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1.2.1 The sieve size is reported as U.S.A. standard test series in any units listed in Table 1 on nominal dimensions of Specification E11, or their commercial size equivalents.  
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5.1 The crystallinity of petroleum coke, as reflected by the Lc  value, is a general measure of quality affecting suitability for end use and is a function of the heat treatment.  
5.2 The crystallite thickness is used to determine the extent of such heat treatment, for example, during calcination. The value of the Lc  determined is not affected by coke microporosity or the presence of foreign, non-crystalline materials such as dedust oil.
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1.1 This test method covers the determination of the mean crystallite thickness of a representative, pulverized sample of calcined petroleum coke by interpretation of a X-ray diffraction pattern produced through conventional X-ray scanning techniques.  
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Standard Test Method for Real Density of Calcined Petroleum Coke by Helium Pycnometer

SIGNIFICANCE AND USE
5.1 The real density of calcined petroleum coke directly influences the physical and chemical properties of the manufactured carbon and graphite artifacts for which it is used. Density, therefore, is a major quality specification of calcined petroleum coke and is used as a control in coke calcination.
SCOPE
1.1 This test method covers the determination of the real density (RD) of calcined petroleum coke. Real density, by definition is obtained when the particle size of the specimen is smaller than 75 µm (U.S. No. 200 Sieve).  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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