Method and device for measuring the particle size in a...

Details Method and device for measuring the particle size in a... Method and device for measuring the particle size in a...

G - Physics

01

N

358/8

G01N 23/12 (2006.01)

Patent

CA 1076713

METHOD AND DEVICE FOR MEASURING THE PARTICLE SIZE IN A FLOW OF MATERIAL ABSTRACT OF THE DISCLOSURE A method and a device for determining or observing the average particle size or particle size distribution in a flow of material, such as a slurry, wherein the material is allowed to flow at a constant velocity through a radiation beam, the time interval distribution of the radiation quanta pass- ing through the material flow is measured, this distribution describing the particle size distribution and offering a possibility to control any changes in the size distribution, and from the measured time interval distribution is subtracted the known time interval distribution of the quanta of the radiation beam emitted by the source of radiation, this known distribution being a Poisson distribution, and, finally, the particle size or size distribution is determined arithmetically on the basis of the observed change in the time interval distribution. Preferably, the source of radiation is an X-ray tube or a radio isotope source, and the radiation detector may be a scintillation detector, a proportional counter or a semi-conductor detector.

285911

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