ASTM_D_5004_-_11.pdf

Designation:D500411Standard Test Method forReal Density of Calcined Petroleum Coke by XyleneDisplacement1This standard is issued under the fixed designation D5004;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.Scope*1.1 This test method covers the determination of the realdensity(RD)of calcined petroleum coke.Real density,bydefinition,is obtained when the particle size of the testspecimen is smaller than 75 m(No.200 sieve).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.For specificwarning statements,see Sections 10 and 11.1.2.Referenced Documents2.1 ASTM Standards:2D346 Practice for Collection and Preparation of CokeSamples for Laboratory AnalysisD1193 Specification for Reagent WaterD2013 Practice for Preparing Coal Samples for AnalysisD2234/D2234M Practice for Collection of a Gross Sampleof CoalD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4292 Test Method for Determination of Vibrated BulkDensity of Calcined Petroleum CokeD4930 Test Method for Dust Control Material on CalcinedPetroleum CokeD6969 Practice for Preparation of Calcined Petroleum CokeSamples for AnalysisD6970 Practice for Collection of Calcined Petroleum CokeSamples for AnalysisD7454 Test Method for Determination of Vibrated BulkDensity of Calcined Petroleum Coke using a Semi-Automated ApparatusE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Terminology3.1 Definitions:3.1.1 calcined petroleum coke,npetroleum coke that hasbeen thermally treated to drive off the volatile matter and todevelop crystalline structure.3.1.2 petroleum coke,nsolid,carbonaceous residue pro-duced by thermal decomposition of heavy petroleum fractionsor cracked stocks,or both.3.2 Definitions of Terms Specific to This Standard:3.2.1 bulk density,nmass of the particles divided by thevolume they occupy that includes the space between theparticles.Refer to Test Methods D4292 and D7454 for bulkdensity procedures.3.2.2 dedusting material,nsee Test Method D4930.3.2.3 real density,n(also referred to as true specificgravity),the mass divided by the volume occupied by thematerial excluding pores and voids.It is required,therefore,that voids in the coke be eliminated and that pores in thematerial be filled by the fluid being displaced.This requirementis met for the purposes of this test method by reducing the cokeparticles to a size smaller than 75 m.3.2.3.1 DiscussionThe density of particles larger than 75m up to the largest that can be put into the helium pycnometercan also be determined,but must be designated as particledensity(PD).The precision data obtained for RD may not beapplicable to PD.4.Summary of Test Method4.1 The mass of the sample is determined directly and thevolume derived by determining the mass of liquid displacedwhen the sample is introduced into a pycnometer.RD5 M 3D/L(1)where:1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.05 on Properties of Fuels,Petroleum Coke and Carbon Material.Current edition approved June 1,2011.Published July 2011.Originally approvedin 1989.Last previous edition approved in 2009 as D500489(2009).DOI:10.1520/D5004-11.2For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 M=mass of sample,D=density of displaced liquid,andL=mass of displaced liquid.5.Significance and Use5.1 The density of petroleum coke directly influences thephysical and chemical properties of the manufactured carbonand graphite artifacts for which it is used.Density,therefore,isa major quality specification of calcined petroleum coke and isused as a control in coke calcination.6.Interferences6.1 Oil or other material sprayed on calcined petroleumcoke to control dust will interfere with the determination of realdensity so the oil must be removed before reducing the sampleto 75 m.6.1.1 When a petroleum oil was used,it can be removed byflushing with a solvent such as methylene chloride,dichlo-roethane,or toluene.The solvent must be completely removedbefore proceeding with the RD determina