Method and apparatus of discriminating coal species
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United States of America Patent
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Feb 23, 1999
Grant Date -
N/A
app pub date -
Apr 24, 1997
filing date -
Apr 26, 1996
priority date (Note) -
Expired
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Abstract
In a method and apparatus for discriminating a coal species, discriminating values of coal species/properties are prepared corresponding to coal ranks, a coal to be discriminated is irradiated with near-infrared rays having different wavelengths, and light of near-infrared rays reflected from the coal is received; Aborbances of the coal are acquired, and the coal species/property discriminating value of the coal is discriminated on the basis of the absorbances and a prescribed calibration curve.
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