Real time continuous elemental measurement of bulk material

Details Real time continuous elemental measurement of bulk material Real time continuous elemental measurement of bulk material

2006-02-28

2006-02-28

McElheny, Jr., Donald (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

C702S008000, C702S026000, C702S028000

Reexamination Certificate

active

07006919

ABSTRACT:
Methods and apparatus for continuous real-time measurement of bulk material using gamma irradiation and neutron irradiation. A DGA device monitors bulk material flow and produces a spectrum that is compared to a baseline spectrum to produce a relative weight/impurity ratio. A PGNAA device monitors the same bulk material flow and produces a spectrum that is compared to a library of spectrums to produce a relative component ratio. The relative component ratio is processed with the relative weight/impurity ratio to produce an absolute weight and impurity value, which is then processed with the relative component ratio to produce absolute component, or analyte, values.

REFERENCES:
patent: 4582992 (1986-04-01), Atwell et al.
patent: 6362477 (2002-03-01), Sowerby et al.

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