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  • ASTM
    D441-86(2002) Standard Test Method of Tumbler Test for Coal
    Edition: 2002
    $82.37
    Unlimited Users per year

Description of ASTM-D441 2002

ASTM D441-86(2002)

Historical Standard: ASTM D441-86(2002) Standard Test Method of Tumbler Test for Coal

SUPERSEDED (see Active link, below)




ASTM D441

1. Scope

1.1 This test method covers the determination of the relative friability of a particular size of sized coal. It affords a means of measuring the liability of coal to break into smaller pieces when subjected to repeated handling at the mine or subsequently, by the distributor or by the consumer. This test method is serviceable for ascertaining the similarity of coals in respect to friability rather than for determining values within narrow limits to emphasize their dissimilarity. This test method also may serve to indicate the relative extent to which sized coals will suffer size degradation in certain mechanical feed devices. This test method may be used for differentiating between certain ranks and grades of coal, and therefore the test method is of service for coal classification purposes.

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

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 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

D2234/D2234M Practice for Collection of a Gross Sample of Coal

D4749 Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size

E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves


Keywords

breakage; coal; coal handling; friability; size stability; tumbler ;


ICS Code

ICS Number Code 73.040 (Coals)


DOI: 10.1520/D0441-86R02

ASTM International is a member of CrossRef.


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ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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