ASTM D3175-2018 Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke.pdf
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1、Designation: D3175 17D3175 18Standard Test Method forVolatile Matter in the Analysis Sample of Coal and Coke1This standard is issued under the fixed designation D3175; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las
2、t revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This test method covers the determ
3、ination of the gaseous products, exclusive of moisture vapor, as volatile matter in theanalysis sample of coal or coke from coal.1.2 The test method for the determination of volatile matter is empirical.1.3 UnitsThe values stated in SI units are to be regarded as standard. The values given in parent
4、heses after SI units areprovided for information only and are not considered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and he
5、althenvironmental practices and determine theapplicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International St
6、andards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D121 Terminology of Coal and CokeD346 Practice for Collection and Preparation of Coke Samples for Laboratory AnalysisD388 Classification of
7、 Coals by RankD2013 Practice for Preparing Coal Samples for AnalysisD3173/D3173M Test Method for Moisture in the Analysis Sample of Coal and CokeD3180 Practice for Calculating Coal and Coke Analyses from As-Determined to Different BasesD5142 Test Methods for Proximate Analysis of the Analysis Sample
8、 of Coal and Coke by Instrumental Procedures (Withdrawn2010)3D6374 Test Method for Volatile Matter in Green Petroleum Coke Quartz Crucible ProcedureD3173/D3173M Test Method for Moisture in the Analysis Sample of Coal and CokeD7582 Test Methods for Proximate Analysis of Coal and Coke by Macro Thermog
9、ravimetric AnalysisE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method3. Terminology3.1 Definitions:3.1.1 poppingunseating of the crucible cover due to swelling of the test sample resulting in mechanical loss of the testmaterial.3.1.1.1 DiscussionThis ph
10、enomenon is normally associated with strongly swelling coals.1 This test method is under the jurisdiction of ASTM Committee D05 on Coal and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of Analysis.Current edition approved Feb. 1, 2017Dec. 1, 2018. Published March 2017Janua
11、ry 2019. Originally approved in 1973. Last previous edition approved in 20112017 asD3175 11.D3175 17. DOI: 10.1520/D3175-17.10.1520/D3175-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolum
12、e information, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have
13、been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official docum
14、ent.*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 States13.1.2 sparkingthe evolution of gaseous products at a rate sufficient to mechanically carry solid particles out of the
15、 crucible.Thosecrucible; those particles escaping at higher temperatures become incandescent when they are emitted, creating sparks.3.1.2.1 DiscussionThis phenomenon is normally associated with non-swelling coals but can also be associated with swelling coals as well as cokes.3.1.3 swellingthe chang
16、e in volume which takes place when coal is heated under conditions allowing the softened coal toexpand freely in a direction normal to the plane of heating.3.2 Refer to Terminology D121 for additional definitions of terms used in this test method.4. Summary of Test Method4.1 Volatile matter is deter
17、mined by establishing the mass loss resulting from heating a coal or coke under rigidly controlledconditions. The measured mass loss, corrected for moisture as determined in Test Method D3173/D3173M or Test Methods D7582establishes the volatile matter content. Two procedures are described to permit
18、conformity with differences in sample behavior.4.2 In this empirical test method, the use of platinum crucibles shall be considered the standard reference method for volatilematter. Platinum crucibles shall be used in determining the volatile matter determined for classification of coals by rank. Vo
19、latilematter determinations by some laboratories using alternate nickel-chromium alloy crucibles having the physical dimensionsspecified in 6.1 have been shown to differ from those obtained using platinum crucibles. A laboratory utilizing nickel-chromiumcrucibles shall first determine if a relative
20、bias exists between the use of nickel-chromium and platinum crucibles on the coals beingtested using the test method set forth in Annex A1. Where a relative bias is shown to exist, the volatile matter determined usingnickel-chromium crucibles shall be corrected by a factor determined through compari
21、son of volatile matter results from bothcrucible types on coals being tested or analysis of samples of known proximate analysis.5. Significance and Use5.1 Volatile matter, when determined as herein described, can be used to establish the rank of coals, to indicate coke yield oncarbonization process,
22、 to provide the basis for purchasing and selling, or to establish burning characteristics.6. Apparatus6.1 Platinum Crucible, with closely fitting cover, for coal. The crucible shall be of not less than 1010 mL or more than 20 mL20 mL capacity, not less than 2525 mm or more than 35 mm 35 mm in diamet
23、er, and not less than 3030 mm or more than 35 mm35 mm in height.6.2 Platinum Crucible, with closely fitting cover, for coke. The crucible shall be of 10 mL capacity, with capsule cover havingthin flexible sides fitting down into crucible. Or the double-crucible method can be used, in which the sampl
24、e is placed in 10 mLplatinum crucible, which is then covered with another crucible of such a size that it will fit closely to the sides of the outer crucibleand its bottom will rest 8.58.5 mm to 12.7 mm 12.7 mm (13 in. to 12 in.) in.) above the bottom of the outer crucible.6.3 Alternate Crucible Mat
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