ASTM D409/D409M Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method
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- Техэксперт: Машиностроительный комплекс
- Картотека зарубежных и международных стандартов
- ASME PTC 4.2 Coal Pulverizers
- BSI BS ISO 17604 + A1 Microbiology of food and animal feeding stuffs - Carcass sampling for microbiological analysis - AMD: September 30, 2009
- BSI BS EN ISO 7218 + A1 Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations - CORR: May 31, 2009; AMD: August 31, 2013
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- VDI 3475 BLATT 2 Emission control - Facilities for biological waste - Composting an anaerobic (co-)digestion - Plant capacities up to approx. 6000 Mg/a
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- BSI BS EN ISO 7218 + A1 Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations - CORR: May 31, 2009; AMD: August 31, 2013
- 07
- BSI BS ISO 17604 + A1 Microbiology of food and animal feeding stuffs - Carcass sampling for microbiological analysis - AMD: September 30, 2009
- BSI BS EN ISO 7218 + A1 Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations - CORR: May 31, 2009; AMD: August 31, 2013
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- VDI 3475 BLATT 2 Emission control - Facilities for biological waste - Composting an anaerobic (co-)digestion - Plant capacities up to approx. 6000 Mg/a
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- BSI BS EN ISO 7218 + A1 Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations - CORR: May 31, 2009; AMD: August 31, 2013
- 07.100
- BSI BS ISO 17604 + A1 Microbiology of food and animal feeding stuffs - Carcass sampling for microbiological analysis - AMD: September 30, 2009
- BSI BS EN ISO 7218 + A1 Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations - CORR: May 31, 2009; AMD: August 31, 2013
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- VDI 3475 BLATT 2 Emission control - Facilities for biological waste - Composting an anaerobic (co-)digestion - Plant capacities up to approx. 6000 Mg/a
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- BSI BS EN ISO 7218 + A1 Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations - CORR: May 31, 2009; AMD: August 31, 2013
- BSI BS ISO 17604 + A1 Microbiology of food and animal feeding stuffs - Carcass sampling for microbiological analysis - AMD: September 30, 2009
- BSI BS ISO 17604 + A1 Microbiology of food and animal feeding stuffs - Carcass sampling for microbiological analysis - AMD: September 30, 2009
- BSI BS EN ISO 7218 + A1 Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations - CORR: May 31, 2009; AMD: August 31, 2013
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- VDI 3475 BLATT 2 Emission control - Facilities for biological waste - Composting an anaerobic (co-)digestion - Plant capacities up to approx. 6000 Mg/a
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- BSI BS EN ISO 8199 Water quality - General guidance on the enumeration of micro-organisms by culture - AMD: January 31, 2008
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- VDI 3475 BLATT 2 Emission control - Facilities for biological waste - Composting an anaerobic (co-)digestion - Plant capacities up to approx. 6000 Mg/a
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- ISO TR 13843 Water Quality - Guidance on Validation of Microbiological Methods - First Edition
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- VDI 3475 BLATT 2 Emission control - Facilities for biological waste - Composting an anaerobic (co-)digestion - Plant capacities up to approx. 6000 Mg/a
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- VDI 4256 Blatt 1 Bioaerosols and biological agents - Determination of performance characteristics - Culture-based counting methods
- VDI 3475 BLATT 2 Emission control - Facilities for biological waste - Composting an anaerobic (co-)digestion - Plant capacities up to approx. 6000 Mg/a
- VDI 3475 BLATT 2 Emission control - Facilities for biological waste - Composting an anaerobic (co-)digestion - Plant capacities up to approx. 6000 Mg/a
- VDI 3477 Biological waste gas purification - Biofilters
- DIN 38406-21 German standard methods for the examination of water, waste water and sludge; cations (group E), determination of nine heavy metals (Ag, Bi, Cd, Co, Cu, Ni, Pb, Tl, Zn) (E21)
- DIN 22005-1 Investigations of raw material in hard-coal-mining - Part 1: Survey
- ISO 5074 Hard Coal - Determination of Hardgrove Grindability Index - Third Edition
- Картотека зарубежных и международных стандартов
ASTM International
Standard Test Method for Grindability of Coal by the Hardgrove-Machine Method
N D409/D409M
Annotation
This 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)].
Some 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 highvolatile bituminous, subbituminous, and lignite coals.
The 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.
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 For information concerning the experimental work on which this test method is based, see paper by Hardgrove, R. M., “Grindability of Coal,” Transactions, American Society of Mechanical Engineers, Vol 54, F.S.P., p. 37, 1932.
