Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-12-11
1990-08-21
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356442, G01N 1507
Patent
active
049509080
ABSTRACT:
A control system having opto-electric detectors responsive to different solids concentrations and character of the solids of a slurry, the output of the detectors controlling the addition of a flocculants to the slurry to optimize coagulation of the materials in the slurry. The detectors having outputs sensing different slurry conditions with the detector outputs being processed to control the addition of different flocculants to the cell.
REFERENCES:
patent: 3650698 (1972-03-01), Adler
patent: 4797550 (1989-01-01), Nelson et al.
patent: 4797559 (1989-01-01), Oblad et al.
Meenan Gary F.
Oblad Hayward B.
Consolidation Coal Company
Le Que Tan
McCartney Alan
Nelms David C.
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