ASTM_D_8097_-_17.pdf

Designation:D809717Standard 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 oforiginal 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 specific 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 does 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 Standards: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 MethodsE691 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 across 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 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 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 qualitycontrol.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.NOTE1GeoPyc 13603has been successfully used for this analysis.6.3 Wire Mesh Sieves,8 in.diameter,round,8.00 mm(516in.),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 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 Book 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 alternative 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 19428-2959.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 Barriers to Trade(TBT)Committee.1 6.4 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 followingscreens:8.00 mm(516in.),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(516in.(8.00 mm)andtransfer each sized fraction of calcined petroleum coke intoappropriate c