- D4749
- ASTM StandardD4749 Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
ASTM D121-09a Standard Terminology of Coal and Coke. 2014.
D4749
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as-mined coal — for the purpose of Test Method D4749, same as run of mine (ROM) coal. D4749 … Coke&Coal Terminology
as-shipped or produced coal — for the purpose of Test Method D4749, raw or prepared coal in any state or condition at which it leaves the mine property or loading facility. D4749 … Coke&Coal Terminology
dry sieving — for the purpose of Test Method D4749, the test method for the sieving of coal after the sample has been airdried under prescribed conditions; this is generally used when testing with coal particles larger than 600 µm (No. 30 U.S.A. Standard Sieve … Coke&Coal Terminology
nominal bottomsize — for the purpose of Test Method D4749, the sieve designating the lower limit or bottomsize shall be that sieve of the series given in the Standard Series of Sieves section with the largest openings through which passes a total of less than 15 % of … Coke&Coal Terminology
nominal topsize — for the purpose of Test Method D4749, the sieve designating the upper limit or topsize shall be that sieve of the series given in the Standard Series of Sieves section with the smallest openings upon which is cumulatively retained a total of less … Coke&Coal Terminology
raw coal — for the purpose of Test Method D4749, any coal, regardless of its topsize, that has not been manually or mechanically cleaned. Crushed coal that has not been mechanically cleaned (including coal that has not been through a breaker which normally… … Coke&Coal Terminology
wet sieving — for the purpose of Test Method D4749, the test method for the sieving of coal that uses water as a medium for facilitating the segregation of the sample into particle size; this is generally used when testing coal particles 600 µm (No. 30 U.S.A.… … Coke&Coal Terminology
opening — for the purpose of Test Method D4749, openings and apertures shall be regarded as synonomous terms. Dimensions for round and square openings shall be determined as follows: for round holes, dimensions shall refer to the opening diameter; for… … Coke&Coal Terminology
prepared coal — for the purpose of Test Method D4749, any coal, regardless of its topsize, that has been manually or mechanically cleaned. This includes coal that has been processed over a picking table or air tables through a breaker, jig, or other device which … Coke&Coal Terminology
run-of-mine coal — abbr. ROM coal for the purpose of Test Method D4749, (1) in the case of an underground mine, it is that coal delivered to the surface by a slope belt, hoist, and so forth. (2) in the case of a surface mine, it is that coal as it exists after it… … Coke&Coal Terminology
