1、Designation:E 1183 87(Reapproved 2004)Standard Test Method forAir Drying RDF-5 for Further Analysis1This standard is issued under the fixed designation E 1183;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.
2、A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the process of air drying a grossor laboratory sample of RDF-5.The air dry loss is determinedby air drying on a
3、drying floor.1.2 The values given in SI units are to be regarded as thestandard.The values in parentheses are for information only.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
4、appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specificprecautionary statements,see Section 5.2.Terminology2.1 RDF-5solid fuel derived from municipal solid wastein which the processed combustible fraction is densified(compressed)i
5、nto the form of pellets,cubettes or briquettes.3.Significance and Use3.1 Air drying is performed on a gross sample if it cannot behandled without loss of moisture.A laboratory sample is airdried in order to yield a RDF-5 sample with moisture contentnear to equilibrium with the atmosphere.Such equili
6、brium isnecessary to ensure uniform conditions throughout subsequentanalysis of the RDF-5 laboratory sample for density,sizedistribution,hydrophilia,breakage,and similar tests.The test isnot applicable if the sample is to be tested for total moisture.4.Apparatus4.1 Drying Floor,a smooth,clean floor
7、area in a room freeof contamination by dust or other material and that permits aircirculation without excessive heat or air currents.4.2 Drying Pans,clean,dry,non-corroding pans used tocontain the sample during the drying process.4.3 Balance or Scale,a device capable of weighing thesample and contai
8、ner with a sensitivity of 0.1 g in 1000 g(0.0002 lb in 2.2 lb.)4.4 Glass Stirring Rod,a clean,smooth glass rod used to stirthe sample to facilitate drying.4.5 Shovel,used to stir the sample to facilitate drying.5.Precautions5.1 All operations shall be done rapidly and in as fewoperations as possible
9、 because moisture loss depends onseveral factors other than total moisture content,such asatmospheric temperature and humidity.5.2 At all times RDF-5 samples should be protected frommoisture change due to exposure to rain,snow,wind,and sunor contact with absorbant materials.5.3 Samples should be tra
10、nsported to the laboratory andanalyzed as soon as possible.If any sample handling stepinvolves an extended time period,the sample and containershould be weighed before and after the process to determineany weight gain or loss.This weight gain or loss shall beincluded in the calculation of moisture c
11、ontent.6.Procedure6.1 Weigh the sample to the nearest 0.5 g(0.001 lb).Spreadthe sample on the drying floor to a depth of not more than 15cm(6 in.).Mix or stir the RDF-5 with a shovel from time totime,being careful not to lose or break particles.6.1.1 Continue air drying and mixing until the surface
12、of thesample appears dry.Weigh the entire sample and redistributeover the floor for further drying.Continue the drying,mixing,and weighing until the weight loss of the total sample is#0.1%/h.Refrain from excessive drying and rough handlingof the RDF-5 in order to avoid particle breakage.7.Report7.1
13、This test method does not yield a numerical quantity thatis reported.1This test method is under the jurisdiction of ASTM Committee D34 on WasteManagement and is the direct responsibility of Subcommittee D34.06 on Recoveryand Reuse.Current edition approved Aug.28,1987.Published October 1987.1Copyrigh
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