1、STD.ASTM D432Y-ENGL 3,997-0759530 ObLL205 256 m m Designation:D 4324-97 AMERICAN SOCIETY FOR TESTING AND MATERIALS 100 Barr Harbor Dr.,West Conshohocken,PA 19428 Reprinted from the Annual Book of ASTM Standards.Copyright ASTM Standard Test Method for Carbon Black,Pelleted-Pellet Attrition 1.scope 1.
2、1 This test method covers the determination of pellet attrition of pelleted carbon black.1.2 The values stated in SI units are to be regarded as the standard.The values in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns,if any,associated
3、with its 21se.It is the responsibility of the user of this standard to establish appre priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents 2.1 ASTM Standards:D 1508 Test Method for Carbon Black,Pelleted-Fines Content*D 15
4、11 Test Method for Carbon Black-Pellet Size Distribution2 D 1799 Practice for Carbon Black-Sampling Packaged Shipments2 D 1900 Practice for Carbon Black-Sampling Bulk Ship ments2 D4483 Practice for Determining Precision for Test Method Standards in the Rubber and Carbon Black Industries2 D 58 17 Pra
5、ctice for Carbon Black,Pelleted-Reduction and Blending of Gross SamplesZ E 11 Specification for Wire-Cloth Sieves for Testing Pur-poses3 3.Summary of Test Method 3.1 A test sample of carbon black is placed on a 125+m sieve and shaken in a mechanical sieve shaker for 5 tnin to remove the fines(see Te
6、st Method D 1508).The same test sample is shaken for an additional 15 mitt to determine the amount of pellet breakdown or attrition created during this additional shake interval.The attrition is expressed in percent.4.Significance and Use 4.1 The attrition of carbon black gives some indication as to
7、 the amount of fines that may be expected to be created by pellet breakdown in conveying and handling or in a bulk shipment while in transit.I This test method is under the jurisdiction of ASlM Chnmittee D24 on Carbon Black and is the direct responsiity of Subannmit&ee D24.5 1 on Cahon Black Pellet
8、Properties Current edition approved July 10,1997.Published April 1998.Orally published as D 4324-84.Last previous edition D 4324-95b”.2 Annual Book ofA.STM&rndds,VolO9.01.Ann&Bmk qfA.STM SrandardF,Vol 14.02.5.Apparatus 5.1 Mechanicd Sieve Shaker.4 5.2 Sieves,six 125 pm(U.S.Standard No.120),having a
9、200 mm(8 in.)diameter and 25 mm(1 in.)height,or equivalent,conforming to Specification E 11.5.3 Sieve Separator Receivers,five.5.4 Sieve Cover.5.5 Bottom Receiver Pan.5.6 Rijk Sampk Splitter.5.7 Small&oop or Large Spoon.5.8 Balance,0.l-g sensitivity.6.Sampling 6.1 Samples shall be taken in accordanc
10、e with Practices D 1799 and D 1900.6.2 Practice D 5817 shall be used for reduction and blending of samples.7.procedare 7.1 Stack the sieves in the following order Corn bottom to top:Bottom receiver,125pm sieve,separator receiver,125pm sieve,and four additional separator receivets and sieves,alternat
11、ely pIaced and with the cover placed on the top sieve.7.2 Weigh 25.0 g of test sample,being careful to dip approximately 25 g of material Corn the sample pan of the rifIIe sample splitter.Nur I-ltnotgoodpracticetoweigh-outthesamplebypo itdirectlyoutofthesplittacontainersincetbefinesandsmall wintfmdt
12、omnain intbecontainerwhilethelargepenetspouroutlilst-7.3 Transfer each test sample to an individual 12-m sieve.7.4 Complete the assembly with the cover and transfer to the shaker.Tiiten the stack in the shaker to eliminate any looseness.7.5 Start the shaker and allow to shake for 5 mitt with the ham
13、meropera 7.6 Remove the sieve assembly and discard the black n3ained on each receiver.N3-IfthcSminfioesinTestMethodD1508istobe detemhdiuadditiontotheattrition,weighthecahonbla&xrtakd oneachreceivertothenearestO.lgandthendiscardthispomon 7.7 Reassemble the sieves and tram&r the stack back to the shak
14、er and shake for an additional 15 min.4 A R*Tap sieve shakex is satisfactory for this pmpwe.For a daxiption of this appamturefertoTcstMcthaiD 1511.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest info
15、rmation.STD.ASTM D4324-ENGL 1997-0759530 ObLLZOb I,92 m a D 4324 7.8 Remove the sieve assembly and weigh the carbon bhckretainedoneachreceivertothenearestO.1g.7.9 Empty and clean thoroughly all sieves in pmpamtion for the next test.8.-8.1 Calculate the attrition to the nearest 0.1%as follows A=(W/S)
16、X loo where:A=attrition,%W=masofcarbonblackinreceiverafterI5minshake,g,and s=mass of original test sample,g.9.Report 9.1 Report the following information:9.1.1 Proper identification of the carbon black,and 9.1.2 Result obtained from a single determhatioo re ported to the nearest 0.1%.10.Precision and Bias 10.1 Precisim-The precision results for this test method originally were derived fi-om an interlaboratory test program(lTP)conducted prior to the adoption of Practice D 4483 as the reference pr
