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Standard Test Method for Major and Minor Elements in Coal Ash By X-Ray Fluorescence
NORMA vydaná dňa 1.9.2021
Označenie normy: ASTM D4326-21
Dátum vydania normy: 1.9.2021
Kód tovaru: NS-1040603
Počet strán: 9
Približná hmotnosť: 27 g (0.06 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
coal, coal ash, major elements, minor elements, X-ray fluorescence,, ICS Number Code 75.160.10 (Solid fuels)
Significance and Use | ||||||||||||||||||||
5.1?A compositional analysis of ash is used in describing the quality of coal for its complete characterization. Ash composition is useful in predicting slagging and fouling characteristics of combusted materials as well as the potential utilization of ash by-products. 5.2?The chemical composition of laboratory prepared coal ash is rarely, if ever, representative of the composition of the mineral matter in the coal because the ashing process can alter some minerals. However, it can approximate the composition of the fly ash and slag resulting from commercial combustion of coal. |
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1. Scope | ||||||||||||||||||||
1.1?This test method covers the analysis of the commonly determined major and minor elements in ash from coal using X-ray fluorescence (XRF) techniques. Note 1:?Test Method D5016 is used for determination of
sulfur.
Note 2:?Although not included in the present method, the
determination of barium, strontium, and manganese may be required
to yield adequate totals.
1.2?UnitsThe values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||||||||||||||
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