Skip to content
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Go to AMERICAS site X
Please enter a keyword to search

  • ASTM D 409/D409M : 2016

    Current The latest, up-to-date edition.
    Add to Watchlist
    This Standard has been added successfully to your Watchlist
    Please visit My Watchlist to see all standards that you are watching.
    Please log in or to add this standard to your Watchlist.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    You have already added this standard to your Watchlist.
    Visit My Watchlist to view the full list.

    Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-09-2016

    Publisher:  American Society for Testing and Materials

    Add to Watchlist

    Add To Cart

    Abstract - (Show below) - (Hide below)

    1.1 This test method2 covers the determination of the relative grindability or ease of pulverization of coals in comparison with coals chosen as standards.

    Scope - (Show below) - (Hide below)

    1.1This test method2 covers the determination of the relative grindability or ease of pulverization of coals in comparison with coals chosen as standards. A prepared and sized sample receives a definite amount of grinding energy in a miniature pulverizer, and the size consist of the pulverized product is determined by sieving. The resultant size consist is used to produce an index relative to the ease of grinding [Hardgrove Grindability Index (HGI)].

    1.1.1Some coals, such as some high-volatile bituminous, subbituminous, and lignite coals, can undergo physical change as the natural or seam moisture is released during handling and preparation. This change is often sufficient to alter the grindability characteristics that will be reported when tested in the laboratory and could produce different indices dependent on the conditions of drying and the moisture level of the 1.18 × 0.60 mm (No. 16 × 30) (see Test Method D4749) materials used for the test. Therefore, the repeatability and reproducibility cited in this test method may not apply for these high-volatile bituminous, subbituminous, and lignite coals.

    1.2The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

    1.3This 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.

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

    Committee D 05
    Document Type Test Method
    Publisher American Society for Testing and Materials
    Status Current
    Supersedes

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

    ASTM D 7430 : 2010 Standard Practice for Mechanical Sampling of Coal
    ASTM E 11 : 2020 Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
    ASTM D 7430 : 2012 : REV A Standard Practice for Mechanical Sampling of Coal
    ASTM D 6708 : 2018 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 6708 : 2015 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 6708 : 2013 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 7430 : 2012 : REV B Standard Practice for Mechanical Sampling of Coal
    ASTM D 6883 : 2003 : REV A Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
    ASTM D 6708 : 2007 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 3302 : 2007 : EDT 1 Standard Test Method for Total Moisture in Coal
    ASTM D 6609 : 2017 Standard Guide for Part-Stream Sampling of Coal
    ASTM D 6708 : 2016 : REV B Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 6883 : 2017 Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
    ASTM D 2013 : 2000 : REV A : EDT 1 Standard Practice of Preparing Coal Samples for Analysis
    ASTM D 6708 : 2006 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 3302 : 2002 : REV A Standard Test Method for Total Moisture in Coal
    ASTM D 7430 : 2009 Standard Practice for Mechanical Sampling of Coal
    ASTM D 3302 : 2002 Standard Test Method for Total Moisture in Coal
    ASTM D 2013 : 2000 : REV A Standard Practice of Preparing Coal Samples for Analysis
    ASTM D 6883 : 2003 Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
    ASTM D 7430 : 2016 Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2013 Standard Practice for Mechanical Sampling of Coal
    ASTM D 3302 : 1991 Standard Test Method for Total Moisture in Coal
    ASTM D 6708 : 2004 Standard Practice for Statistical Assessment and Improvement of the Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 4749 : 1987 : R2007 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
    ASTM D 2013 : 2000 Standard Practice of Preparing Coal Samples for Analysis
    ASTM D 6708 : 2019 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 6708 : 2016 : REV A Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 6708 : 2008 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 6609 : 2008 Standard Guide for Part-Stream Sampling of Coal
    ASTM E 11 : 2022 Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
    ASTM D 2234/D2234M : 2009 Standard Practice for Collection of a Gross Sample of Coal
    ASTM D 7430 : 2016 : REV A Standard Practice for Mechanical Sampling of Coal
    ASTM D 6708 : 2001 Standard Practice for Statistical Assessment and Improvement of the Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 3302 : 2000 Standard Test Method for Total Moisture in Coal
    ASTM D 6883 : 2004 : R2012 Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
    ASTM D 6708 : 2021 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 7430 : 2010 : REV A Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2011 Standard Practice for Mechanical Sampling of Coal
    ASTM D 6609 : 2001 Standard Guide for Part-Stream Sampling of Coal
    ASTM D 6708 : 2001 : EDT 1 Standard Practice for Statistical Assessment and Improvement of the Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 7430 : 2017 Standard Practice for Mechanical Sampling of Coal
    ASTM D 6708 : 2005 Standard Practice for Statistical Assessment and Improvement of the Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 7430 : 2012 Standard Practice for Mechanical Sampling of Coal
    ASTM D 6609 : 2000 Standard Guide for Part-Stream Sampling of Coal
    ASTM D 6708 : 2013 : EDT 1 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 6609 : 2008 : R2015 Standard Guide for Part-Stream Sampling of Coal
    ASTM D 6708 : 2016 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 2013 : 2003 Standard Practice of Preparing Coal Samples for Analysis
    ASTM D 7430 : 2008 : REV A Standard Practice for Mechanical Sampling of Coal
    ASTM D 3302 : 2007 Standard Test Method for Total Moisture in Coal
    ASTM D 7430 : 2018 : REV A Standard Practice for Mechanical Sampling of Coal
    ASTM D 4749 : 1987 : R1994 : EDT 1 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
    ASTM D 2013 : 2004 Standard Practice of Preparing Coal Samples for Analysis
    ASTM D 7430 : 2016 : REV B Standard Practice for Mechanical Sampling of Coal
    ASTM D 6708 : 2019 : REV A Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 2013 : 2001 Standard Practice of Preparing Coal Samples for Analysis
    ASTM D 6609 : 2007 Standard Guide for Part-Stream Sampling of Coal
    ASTM D 7430 : 2014 Standard Practice for Mechanical Sampling of Coal
    ASTM D 4749 : 1987 : R2012 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
    ASTM D 3302 : 2005 Standard Test Method for Total Moisture in Coal
    ASTM D 3302 : 2002 : REV A : EDT 1 Standard Test Method for Total Moisture in Coal
    ASTM D 7430 : 2015 : REV A Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2015 Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2016 : REV B : EDT 1 Standard Practice for Mechanical Sampling of Coal
    ASTM D 2013 : 1972 Standard Method Of Preparing Coal Samples For Analysis
    ASTM D 7430 : 2011 : REV A : EDT 1 Standard Practice for Mechanical Sampling of Coal
    ASTM D 2013 : 2007 Standard Practice for Preparing Coal Samples for Analysis
    ASTM D 7430 : 2018 : REV A : EDT 1 Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2008 : REV A : EDT 1 Standard Practice for Mechanical Sampling of Coal
    ASTM D 6883 : 2004 Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
    ASTM D 3302 : 2005 : EDT 1 Standard Test Method for Total Moisture in Coal
    ASTM D 4749 : 1987 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
    ASTM D 6708 : 2019 : REV A : EDT 1 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material
    ASTM D 7430 : 2008 Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2010 : REV B Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2011 : REV A Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2018 Standard Practice for Mechanical Sampling of Coal
    ASTM D 7430 : 2015 : REV B Standard Practice for Mechanical Sampling of Coal
    ASTM D 4749 : 1987 : R2002 Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
    ASTM D 3302 : 2007 : REV A Standard Test Method for Total Moisture in Coal
    ASTM D 3302 : 2007 : REV A : EDT 1 Standard Test Method for Total Moisture in Coal
    View more information

    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective
Need help?
Call us on 131 242, then click here to start a Screen Sharing session
so we can help right away! Learn more