Determination of coal ash content by the combined x-ray fluorescence and scattering spectrum

An alternative method is proposed for the determination of the inorganic constituent mass fraction (ash) in solid fuel by the ratio of Compton and Rayleigh X-ray scattering peaks IC/IR subject to the iron fluorescence intensity. An original X-ray optical scheme with a Ti/Mo (or Sc/Cu) double-layer s...

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Bibliographic Details
Published in:Review of scientific instruments 2018-02, Vol.89 (2), p.023103-023103
Main Authors: Mikhailov, I. F., Baturin, A. A., Mikhailov, A. I., Borisova, S. S., Fomina, L. P.
Format: Article
Language:English
Subjects:
Elastic scattering
Fly ash
Iron constituents
Iron oxides
Molybdenum
Radiators
Scattering angle
Scientific apparatus & instruments
Solid fuels
Titanium
Vulnerability
X-ray fluorescence
X-ray scattering
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Summary:An alternative method is proposed for the determination of the inorganic constituent mass fraction (ash) in solid fuel by the ratio of Compton and Rayleigh X-ray scattering peaks IC/IR subject to the iron fluorescence intensity. An original X-ray optical scheme with a Ti/Mo (or Sc/Cu) double-layer secondary radiator allows registration of the combined fluorescence-and-scattering spectrum at the specified scattering angle. An algorithm for linear calibration of the Compton-to-Rayleigh IC/IR ratio is proposed which uses standard samples with two certified characteristics: mass fractions of ash (Ad) and iron oxide (WFe2O3). Ash mass fractions have been determined for coals of different deposits in the wide range of Ad from 9.4% to 52.7% mass and WFe2O3 from 0.3% to 4.95% mass. Due to the high penetrability of the probing radiation with energy E > 17 keV, the sample preparation procedure is rather simplified in comparison with the traditional method of Ad determination by the sum of fluorescence intensities of all constituent elements.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4993101