ASTM_D_4930_-_06_2011.pdf

Designation:D493006(Reapproved 2011)Standard Test Method forDust Control Material on Calcined Petroleum Coke1This standard is issued under the fixed designation D4930;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 This test method covers the determination of the amountof material applied to calcined coke to control dust associatedwith coke handling and transportation.1.2 This test method is limited to those materials that aresoluble in a solvent that can be used in a Soxhlet extractiontype of apparatus such as methylene chloride(dichloro-methane).NOTE1Methylene chloride is the most popular solvent for removingdust control oil at the time this procedure is being written.Toluene andmethyl chloroform,however,have been used with equal results on allcokes tested which have included only those sprayed with aromatic orwaxy materials.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 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 Section 7.2.Referenced Documents2.1 ASTM Standards:2D346 Practice for Collection and Preparation of CokeSamples for Laboratory AnalysisD2013 Practice for Preparing Coal Samples for AnalysisD2234/D2234M Practice for Collection of a Gross Sampleof CoalD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Terminology3.1 Definitions:3.1.1 analysis sample,nthe reduced and divided represen-tative portion of the bulk sample,prepared for use in thelaboratory.3.1.2 bulk sample,nthe reduced and divided representa-tive portion of the gross sample as prepared for shipment to andreceived by a laboratory,to be prepared for analysis.3.1.3 test sample,nthe weighed portion of the analysissample actually used in a test.3.2 Definitions of Terms Specific to This Standard:3.2.1 de-dusting material,na substance,such as a petro-leum oil,a petroleum wax,an aqueous latex emulsion,and thelike,that is applied to(sprayed on)calcined petroleum coke tocontrol dust associated with coke handling and transport.4.Summary of Test Method4.1 The dust control material is dissolved from a weigheddry representative sample of 6.3-mm maximum sized coke bymethylene chloride in a Soxhlet extraction apparatus.The massof the residue remaining after distilling and evaporating thesolvent is the mass of dust control material.The amount ofresidue as a percent of the original mass is calculated.5.Significance and Use5.1 The test is designed to quantify the amount of dustcontrol material added to calcined coke.The dust controlmaterial is applied to calcined coke to help maintain a dust-freeenvironment.It generally serves no other useful purpose.Itadds weight to the coke and can have a negative effect on thequality of carbon and graphite artifacts made from the treatedcoke.For these reasons the coke customer wants to know theamount of dust control material on the coke and can specify amaximum level.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 May 1,2011.Published August 2011.Originallyapproved in 1989.Last previous edition approved in 2006 as D493006.DOI:10.1520/D4930-06R11.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Apparatus6.1 Extractor,with condenser,Soxhlet,200 mL capacity.36.2 Flask,round bottom with short neck,250-mL.6.3 Heating Mantle,for 250-mL flask.6.4 Boiling Chips.6.5 Thimbles,Cellulose Extraction,43 mm in diameter by123 mm in height(single thickness;9 to 11 m for liquidretention).6.6 Analytical Balance,capable of weighing to 0.1 mg.6.7 Hot Plate,with temperature control 63C between 90and 110C.6.8 Hooked Glass Tube,3-mm inside diameter,225-mmlong,bent such that about 75 mm extends into the flask whenconnected into the neck of the flask.6.9 Flexible Tubing.6.10 Drying Oven,Forced Draft or Vacuum(vacuum pre-ferred if toluene is used).6.11 Desiccator.6.12 Rifflers,encased with hoppers.6.13 Hood.7.Reagents7.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Un