ASTM D 409/D409M : 2016
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method
Hardcopy , PDF
25-07-2024
English
01-09-2016
Important note : All end users must be registered with an Account prior to user licenses being assigned.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.
| Committee |
D 05
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| DocumentType |
Test Method
|
| Pages |
15
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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.
| 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 E 11 : 2024 | Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves |
| 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 : 2024 | 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 : 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 |
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