Compositions – Radioactive compositions
Patent
1991-03-01
1992-07-28
Hunt, Brooks H.
Compositions
Radioactive compositions
210660, 210681, 210682, 209 32, 209576, 209456, G21F 1900
Patent
active
051339013
ABSTRACT:
The concentrations of residual heavy metal contaminants in the particulate material in a slurry produced in a particulate material washing process are monitored on-line and can be used to control the washing process. In alternative embodiments of the invention, x-rays, thermal neutrons or laser beams are directed at the slurry as it flows through a flow cell to induce emission of secondary x-rays, gamma rays or light, respectively, characteristic of the heavy metal contaminants and constituents representative of the solids contents of the slurry. These characteristic energies are measured and used to determine the concentration in ppm of the residual heavy metal contaminants in the particulate material within the slurry.
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Bartko John
Congedo Thomas V.
Grant David C.
Lahoda Edward J.
Partlow William D.
Hunt Brooks H.
Jenkins Daniel J.
Telfer G. H.
Westinghouse Electric Corp.
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