• ASTM D 440 : 2007 : R2019 : EDT 1

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    Standard Test Method of Drop Shatter Test for Coal

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  12-01-2019

    Publisher:  American Society for Testing and Materials

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    1.1This test method of drop shatter test2 covers the determination of the relative size stability and its complement, the friability, of sized coal. It affords a means of indicating the ability of coal to withstand breakage when subjected to handling at the mine and during transit to the consumer. The test method is serviceable for ascertaining the similarity of coals in respect to size stability and friability rather than for determining values within narrow limits in order to emphasize their dissimilarity. This test method is considered applicable for testing a selected single size of different coals, for testing different single sizes of the same coal, and for mixed sizes of the same or different coals.

    Note 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.

    1.2This 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.

    1.3The values stated in inch-pound units shall be regarded as the standard. Mass may be expressed in metric values.

    1.4This 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.

    1.5This 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.

    General Product Information - (Show below) - (Hide below)

    Committee D 05
    Document Type Test Method
    Product Note ε1 NOTE—Editorial changes were made throughout in December 2019.
    Publisher American Society for Testing and Materials
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ASTM E 323 : 2011 : R2021 Standard Specification for Perforated-Plate Sieves for Testing Purposes
    ASTM E 11 : 2020 Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
    ASTM E 323 : 2011 : R2016 Standard Specification for Perforated-Plate Sieves for Testing Purposes
    ASTM D 4749 : 1987 : R1994 : EDT 1 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
    ASTM D 4749 : 1987 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
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