Centrifuge particle size analyzer

Details Centrifuge particle size analyzer Centrifuge particle size analyzer

1989-07-13

1992-03-10

Lall, Parshotam S.

Boots, shoes, and leggings

738655, G01N 2302, G06F 1542

Patent

active

050954512

ABSTRACT:
The invention provides a method and apparatus for determining particle size distribution of particulate samples. Particle size distribution is determined by measuring particle concentration (based on radiation transmittance measurement) as a function as time, and position along the direction in which the particles are settling. Preferably, the particles in a suspension are subjected to a centrifugal force field by rotation in a disc-shaped settling tank. A radiation source and detector scanning assembly, which is capable of radial movement with respect to the rotating settling tank, measures transmittance through the sample as a function of time and radial position. Also provided are mathematical relations suitable for determining particle size distribution from the measured data.

REFERENCES:
patent: 3621243 (1971-11-01), Olivier
patent: 3982126 (1976-09-01), Von Alfthan
patent: 4318180 (1982-03-01), Lundqvist
patent: 4320415 (1982-03-01), Jones
patent: 4736311 (1988-04-01), Takeuchi et al.

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