dry mineral matter free basis

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Definition of dry mineral matter free basis

Definition of dry mineral matter free basis An analysis expressed on the basis of a coal sample from which the total moisture and the mineral matter have in theory been removed. Ref: BS, 4 Click here to see list of references, authorities, sources and geographical terms as used in this glossary.

Recording Standards or Basis for Coal Analysis, Coal Analysis .

Dry, mineral matter-free basis: Data or results are calculated to a theoretical base as if there were no moisture or mineral matter in the coal sample ASTM method D388-12; American Society for Testing and Materials, 2013, p. 390–396 . For this basis, a calculation is needed to determine mineral-matter content rather than ash yield.

Coal Calculations SGS

DAF is Dry Ash Free Basis Two Stage Total Moisture Formula Refer to ASTM D3302 section 10 Two stage total moisture determination is used when the coal sample is too small mass or too wet to divide or crush without the potential of losing significant amounts of moisture. TMar, % = Rm,ad, % x 100 – Fm,ad, % / 100 Fm,ad %

Mineral Matter - an overview ScienceDirect Topics

dry, mineral matter–free dmmf basis—the coal is assumed to be free of both moisture and mineral matter, and the data are a measure of only the organic portion of the coal moist, ash-free maf basis—the coal is assumed to be free of ash but still contains moisture

Circular 891 - Table 1 - USGS

D Coals having 69 percent or more fixed carbon on the dry, mineral-matter-free basis shall be classified according to fixed carbon, regardless of calorific value. E It is recognized that there may be nonagglomerating varieties in these groups of the bituminous class, and there are notable exceptions in the high-volatile C bituminous group.

Circular 891 - Glossary of Coal Classifi ion System and .

dry, mineral-matter-free basis.--A type of calculated analytical value of a coal sample expressed as if the total moisture and mineral matter had been removed. Mineral-matter-free is not the same as ash-free.

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