ASTM D5142-09
Standard Test Methods for Proximate Analysis of the Analysis Sample of Coal and Coke by Instrumental Procedures
- Standard No.
- ASTM D5142-09
- Release Date
- 2009
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- 2010-01
- Latest
- ASTM D5142-09
- Replace By
- D7582
- Scope
Moisture, as determined by this instrumental test method, is used for calculating other analytical results to a dry basis using procedures in Practice D 3180
. Moisture as determined by this test method, may be used in conjunction with the air-dry moisture loss determined by Test Method D 3302
to determine total moisture in coal. Total moisture is used for calculating other analytical results to an as-received basis using Practice D 3180 . Ash yield, as determined by this test method, is the residue remaining after burning the coal and coke samples. See Note 1.
Note 18212;The ash obtained differs in composition and amount from the mineral constituents present in the original coal. Combustion causes an expulsion of all water, the loss of carbon dioxide from carbonates, the conversion of iron pyrite into iron oxides and sulfur oxides, and other chemical reactions. Ash yield, as determined by this test method, can differ from the amount of ash produced in furnace operations or other combustion systems because combustion conditions influence the chemistry and amount of ash.
Ash yield, as determined by this test method is used, (1) as a principal parameter to evaluate sampling procedures and coal cleaning processes, (2) in the ultimate analysis calculation of oxygen by difference using Practice D 3176
, (3) in calculations including material balance, reactivity and yields of products relevant to coal conversion processes such as gasification and liquefaction. Volatile matter yield, when determined as herein described, may be used to (1) establish the rank of coals, (2) indicate coke yield on carbonization, (3) provide the basis for purchasing and selling, or (4) establish burning characteristics.
5.6 Fixed carbon is a calculated value. It is the difference between 100 and the sum of the percent moisture, ash, and volatile matter. All percents shall be on the same moisture reference base.
5.7 Moisture, ash, volatile matter, and fixed carbon percents constitute the proximate analysis of coal and coke.
5.8 Moisture, ash, and volatile matter are three of the principal parameters used for assessing the quality of coal.
1.1 These instrumental test methods cover the determination of moisture, volatile matter, and ash, and the calculation of fixed carbon in the analysis of coal and coke samples prepared in accordance with Method D 2013
and Practice D 346 . Results obtained through the use of the instrumental tests have been shown to differ from those obtained with Test Methods D 3173 , D 3174 , and D 3175 on some coals and cokes. Where a relative bias between the instrumental methods and Test Methods D 3173 , D 3174 , and D 3175 for proximate analysis of coal and coke are shown to exist, the instrumental results shall be corrected or the instrument calibrated using samples of known proximate analysis. Test Methods D 3173 , D 3174 , and D 3175 shall be considered the referee test methods. The instrumental test methods are not applicable to thermogravimetric analyzers using microgram size samples. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard......
ASTM D5142-09 Referenced Document
- ASTM D121 Standard Terminology of Coal and Coke
- ASTM D1757 Standard Test Method for Sulfur in Ash from Coal and Coke
- ASTM D2013 Standard Method of Preparing Coal Samples for Analysis
- ASTM D3173 Standard Test Method for Moisture in the Analysis Sample of Coal and Coke
- ASTM D3174 Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal
- ASTM D3175 Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke
- ASTM D3176 Standard Practice for Ultimate Analysis of Coal and Coke
- ASTM D3180 Standard Practice for Calculating Coal and Coke Analyses from As-Determined to Different Bases
- ASTM D3302 Standard Test Method for Total Moisture in Coal
- ASTM D346 Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
ASTM D5142-09 history
- 2009 ASTM D5142-09 Standard Test Methods for Proximate Analysis of the Analysis Sample of Coal and Coke by Instrumental Procedures
- 2004 ASTM D5142-04 Standard Test Methods for Proximate Analysis of the Analysis Sample of Coal and Coke by Instrumental Procedures
- 2002 ASTM D5142-02ae1 Standard Test Methods for Proximate Analysis of the Analysis Sample of Coal and Coke by Instrumental Procedures
- 2002 ASTM D5142-02a Standard Test Methods for Proximate Analysis of the Analysis Sample of Coal and Coke by Instrumental Procedures
- 2002 ASTM D5142-02 Standard Test Methods for Proximate Analysis of the Analysis Sample of Coal and Coke by Instrumental Procedures
- 1990 ASTM D5142-90(1998) Standard Test Methods for Proximate Analysis of the Analysis Sample of Coal and Coke by Instrumental Procedures
