ASTM D720-91(2004)
Historical Standard: ASTM D720-91(2004) Standard Test Method for Free-Swelling Index of Coal
SUPERSEDED (see Active link, below)
ASTM D720
1. Scope
1.1 This test method is a small-scale test for obtaining information regarding the free-swelling properties of a coal. The results may be used as an indication of the caking characteristic of the coal when burned as a fuel. This test is not recommended as a method for the determination of expansion of coals in coke ovens.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D2013 Practice for Preparing Coal Samples for Analysis
Keywords
coal; free-swelling index; Heating tests--coal/coke; Calibration--coal analysis instrumentation; Coal products; Coke button determination; Free-swelling index;
ICS Code
ICS Number Code 73.040 (Coals)
DOI: 10.1520/D0720-91R04
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