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Standard Test Method of Drop Shatter Test for Coal (Includes all amendments and changes 12/9/2019).
Name übersetzen
NORM herausgegeben am 1.11.2019
Bezeichnung normen: ASTM D440-07(2019)e1
Ausgabedatum normen: 1.11.2019
SKU: NS-978330
Zahl der Seiten: 4
Gewicht ca.: 12 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
breakage, coal, coal handling, drop shatter, friability, size stability ,, ICS Number Code 73.040 (Coals)
Significance and Use | ||||||||
3.1 The values determined in this test method, when evaluated in terms of pertinent experience with other coals, may be used as indications of the extent to which coal will break in conventional transit and handling beyond the point of sampling. |
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1. Scope | ||||||||
1.1 This test method of drop shatter testNote 1: By single sizes, it is meant those with fixed upper and lower sieve opening limits, selected from those designated in 4.2; and by mixed sizes, it is meant either “slack” or a mixture of two or more single sizes. 1.2 This test method appears best suited for measuring the relative resistance to breakage of the larger sizes of coal when handled in thin layers such as from loader to mine car, from loading boom to railroad car, from shovel to chute, etc. While it may not be so well adapted for measuring the liability to breakage of coal when handled in mass, as in unloading open-bottom cars, emptying bins, etc., it is believed that the test method will serve also to indicate the relative size stability of composite sizes of coal where, in commercial handling, the smaller sized pieces have a cushioning effect which tends to lessen the breakage of the larger pieces of coal. 1.3 The values stated in inch-pound units shall be regarded as the standard. Mass may be expressed in metric values. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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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