Optics: measuring and testing – For size of particles
Patent
1990-04-25
1991-11-05
Rosenberger, Richard A.
Optics: measuring and testing
For size of particles
356446, G01N 1502
Patent
active
050627090
ABSTRACT:
The instant invention relates to a process for monitoring the particle size and moisture content of finely divided material employing the reflectance of scattered light. The invention is particularly directed to monitoring the particle size within limits and moisture content of terephthalic acid after crystallization and drying processes. The invention is futther directed to providing feedback signals to control dryer throughput and dryer temperature to control moisture content of the finely-divided material.
REFERENCES:
patent: 4040747 (1977-08-01), Webster
patent: 4752689 (1988-06-01), Satake
patent: 4755048 (1988-07-01), Kaufman
Klochko et al., "Photometric Method of Estimating the Particle Size of Carbon Black", Industrial Laboratory, vol. 39, No. 5, pp. 753-755.
Amoco Corporation
Blumberg Gunar J.
Magidson William H.
Medhurst Ralph C.
Rosenberger Richard A.
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