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Standard Test Method for Determining the Relative Degree of Oxidation in Bituminous Coal by Alkali Extraction
Automaticky preložený názov:
Štandardná skúšobná metóda pre stanovenie relatívnej mieru oxidácie v čierneho uhlia by vylúhovanie alkálií
NORMA vydaná dňa 1.1.2015
Označenie normy: ASTM D5263-15
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.1.2015
Kód tovaru: NS-30503
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
absorbance, alkali extraction, colorimetric, humic acids, oxidation (weathering), transmittance ,, ICS Number Code 73.040 (Coals)
Significance and Use | ||||
5.1 This test method is a relative measure of the degree of oxidation present in coal. It does not determine the quantitative amount of oxidized coal present. It is only intended to serve as a guide to the supplier, buyer, and user for selecting coals for metallurgical use. Note 1: Lower rank bituminous coals are more easily extracted
than higher rank coal.
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1. Scope | ||||
1.1 This colorimetric test method describes the determination of the relative degree of oxidation by alkali extraction of coals that are high volatile A bituminous to low volatile bituminous in rank. 1.2 This test cannot be sensitive to thermally oxidized coal. It is intended for coals that may be oxidized as a result of weathering. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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 and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||
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