ASTM D8097-17 Standard Test Method for Determination of Bulk Density for Specific Size Fractions of Calcined Petroleum Coke Using a Transaxial Pressure Pycnometer.pdf
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1、Designation: D8097 17Standard Test Method forDetermination of Bulk Density for Specific Size Fractions ofCalcined Petroleum Coke Using a Transaxial PressurePycnometer1This standard is issued under the fixed designation D8097; the number immediately following the designation indicates the year oforig
2、inal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 The test method covers the determination of bulkdensity for a s
3、pecific size fraction of calcined petroleum cokeusing an automated pycnometer that compacts coke by apply-ing transaxial pressure under a controlled force.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard doe
4、s not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Stan
5、dards:2D6969 Practice for Preparation of Calcined Petroleum CokeSamples for AnalysisD6970 Practice for Collection of Calcined Petroleum CokeSamples for AnalysisE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE69
6、1 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3. Terminology3.1 Definitions:3.1.1 bulk density, nof coke, the ratio of the mass of acollection of particles of a specified size range to the volumeoccupied.3.1.2 transaxial pressure, npressure applied acro
7、ss a hori-zontal axis.4. Summary of Test Method4.1 A representative sample of calcined petroleum coke iscollected and then screened using Specification E11 sieves(8 mm, 4 mm, 2 mm, 1 mm, 0.5 mm, 0.25 mm) into fractions.Each specific size fraction is then weighed and the bulk volumeis measured using
8、the pycnometer. This test method measuresthe bulk volume by controlling the consolidation force andmeasuring the displacement of a plunger used to compact thebed of coke.5. Significance and Use5.1 The bulk density is an indicator of calcined petroleumcoke porosity and packing capability which is an
9、importantcoke property for anode production in aluminum industry. Thisprocedure will allow an automated measurement of specificsized fractions ranging from 8 mm to 0.25 mm coke particles.5.2 Results from this test method are used in determiningcoke specifications, classification purposes, and for qu
10、alitycontrol.6. Apparatus6.1 Balance, capable of measuring 100 g 6 0.0001 g.6.2 Table Top Riffler:6.2.1 Pycnometer, equipped with a force transducer andsuitable 50.8 mm (2 in.) or larger glass chamber and plungerassembly.NOTE 1GeoPyc 13603has been successfully used for this analysis.6.3 Wire Mesh Si
11、eves, 8 in. diameter, round, 8.00 mm(516 in.), 4.00 mm (No. 5), 2.00 mm (No. 10), 1.00 mm (No.18), 0.50 mm (No. 35), 0.25 mm (No. 60), pan, and cover.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility
12、ofSubcommittee D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.Current edition approved Jan. 1, 2017. Published March 2017. DOI: 10.1520/D8097-17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Boo
13、k of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The sole source of supply of the apparatus known to the committee at this timeis Micromeritics Instrument Corporation, 4356 Communications Dr., Norcross, GA30093, USA. If you are aware of alternat
14、ive suppliers, please provide thisinformation to ASTM International Headquarters. Your comments will receivecareful consideration at a meeting of the responsible technical committee,1whichyou may attend.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-295
15、9. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical B
16、arriers to Trade (TBT) Committee.16.4 Ro-tap Sieve Shaker, for 8 in. diameter sieves.7. Sampling, Test Specimens, and Test Units7.1 Grab a representative sample according to PracticeD6970 and reduce the sample to 900 g 6 100 g followingPractice D6969.7.2 Sieve the representative sample using the fol
17、lowingscreens: 8.00 mm (516 in.), 4.00 mm (No. 5), 2.00 mm (No.10), 1.00 mm (No. 18), 0.50 mm (No. 35), and 0.25 mm (No.60).7.3 Using a sieve shaker, shake the sieves for 10 min.7.4 Discard of the top sieve material (516 in. (8.00 mm) andtransfer each sized fraction of calcined petroleum coke intoap
18、propriate containers.8. Preparation of Apparatus8.1 Follow manufacturers instructions for initial assembly,conditioning, and preparation of pycnometer.9. Calibration and Standardization9.1 Follow the instructions for the equipment used.9.2 A blank data set can be performed by following theprocedure
19、based upon the equipment used. If the GeoPyc (seeNote 1) is used, follow detail in Annex A1 and Table 1.9.3 A blank data set shall be performed each time a newcylinder is used or when the apparatus is moved.10. Procedure10.1 Split the sieved sample fraction to a test specimen of52 g 6 2g.10.2 Weigh
20、the prepared test specimen to 0.0001 g andrecord the weight.10.3 Pour the entire test specimen into the glass chamberand insert PTFE plunger.10.4 Fit the chamber and plunger assembly onto the pyc-nometer.10.5 Start the analysis following the procedure in theinstruction manual.10.6 Enter the necessar
21、y or required information such assample identification, sample mass, or other user-selectedinformation.10.7 Choose the stored blank data set for the analysis.10.8 Press “Enter.” The analysis will begin and will beperformed automatically.10.9 Record the final volume or density when pycnometerhas fini
22、shed analyzing the test specimen. You may also print acopy of the report if a printer is attached.11. Calculation or Interpretation of Results11.1 The pycnometer measures the volume of each consoli-dation cycle and then averages the results of all the runs. Theaverage volume and specimen weight are
23、used to calculate thespecimen bulk density. The final results are reported in cm3andg/cm3, with three decimals.12. Report12.1 The specific size fraction must be reported as part ofthe test results.13. Precision and Bias13.1 The precision of this test method is based on aninterlaboratory study of D80
24、97, conducted in 2016. Fivelaboratories tested five unique petroleum coke specimen types/sizes. Every test result represents an individual determination,and all participants reported duplicate test results for eachmaterial tested. Practice E691 was followed for the design andanalysis of the data; th
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