ASTM_D_346_-_D_346M_-_11.pdf

Designation:D346/D346M11Standard Practice forCollection and Preparation of Coke Samples for LaboratoryAnalysis1This standard is issued under the fixed designation D346/D346M;the number immediately following the designation indicates the yearof 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.INTRODUCTIONCoke,especially run of oven coke or foundry coke,or both,is a difficult material to sample.It isimperative that every sample be collected and handled carefully and conscientiously and in strictaccordance with the standard procedure described herein.Gross samples of not less than the quantities designated in this practice must be taken,whether thecoke to be sampled consists of a few tons or several hundred tons.1.Scope1.1 This practice covers procedures for the collection andreduction of samples of coke to be used for physical tests,chemical analyses,and the determination of total moisture.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.2.1 Values in SI units or inch-pound units shall beobtained my measurement in SI units or inch-pound units orby appropriate conversion,using the Rules for Conversion andRounding given in IEEE/ASTM SI 10,of measurements madein other units or SI units.Values are stated in SI units wheninch-pound units are not used in practice.1.3 This standard does not purport to address the safetyconcerns associated with its use.It is the responsibility of theuser of this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2D167 Test Method for Apparent and True Specific Gravityand Porosity of Lump CokeD293 Test Method for the Sieve Analysis of CokeD2013 Practice for Preparing Coal Samples for AnalysisD2234/D2234M Practice for Collection of a Gross Sampleof CoalD3038 Test Method for Drop Shatter Test for CokeD3302 Test Method for Total Moisture in CoalD3402 Test Method for Tumbler Test for CokeIEEE/ASTM SI 10 American National Standard for MetricPractice3.Significance and Use3.1 This practice may be used to provide a representativesample of the coke from which it is collected.Because of thevariability of coke and the wide variety of sampling equipment,caution must be exercised in all stages of sampling,fromsystem specifications and equipment procurement to equip-ment acceptance testing and actually taking the final sample.3.2 This practice also provides an analysis sample of cokefrom the gross or divided sample.The analysis samples can beused to determine the value of the coke represented,its abilityto meet specifications,as well as for other purposes.4.Place of Sampling4.1 Sample coke while it is being loaded into or unloadedfrom railroad cars,ships,barges,or trucks,or when dischargedfrom supply bins,grab buckets,belt conveyers,or other cokeconveying equipment.Sample close to the point of interest.5.Collection of Gross Sample5.1 Collect increments regularly,systematically,and withsuch frequency,so that the entire quantity of coke sampled willbe represented proportionately in the gross sample,and a gross1This practice is under the jurisdiction of ASTM Committee D05 on Coal andCoke and is the direct responsibility of Subcommittee D05.23 on Sampling.Current edition approved Oct.1,2011.Published October 2011.Originallyapproved in 1932.Last previous edition approved in 2010 as D346 04(2010).DOI:10.1520/D0346-11.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 sample of the required amount will be collected.The standardgross sample shall equal or exceed the quantities given in Table1.5.1.1 The quantity of sample to be taken will depend on thetype and size of the coke being sampled and the amount ofinformation to be obtained from the sample.5.1.1.1 The size of the sieve analysis sample is governed bythe homogeneity of the coke being sampled.The quantitiesgiven in Table 1 represent the minimum quantity to becollected.The sieve analysis sample will supply sufficient cokefor any subsequent physical tests and laboratory analysis.Totalmoisture of the coke should not be determined on the sieveanalysis sample.5.1.1.2 For the drop shatter test,a minimum of 75 kg 165lb of coke retained on 50-mm 2-in.square mesh sieve iffurnace coke is being processed,or 140 kg 300 lb of