Journal of the Society of Materials Science, Japan
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
He-Ne Laser Scattering Characteristics of Kaolin and Sediment Suspension
Ayao TAKASAKAKenichi TAKAHASHIYoshihiro MATSUDAKiyoshi NIKAIDO
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1982 Volume 31 Issue 348 Pages 864-867

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Abstract
The aim of this paper is to describe an apparatus for determining scattering characteristics of suspension by the dissymmetry method which enables the average particle size to be estimated quickly.
This dissymmetry method is based on the fact that the intensity of scattered light is not distributed symmetrically around the axis passing throught the particles in a direction perpendicular to the light beam, because the particle is not a point light-source. Rays scattered from different parts of the particle may give interference.
Therefore, it is possible to estimate the average particle size from the ratio of the intensities of scattered light at two angles, e. g. Z45 at 45°and 135°.
The dependence of the average particle size Dav(μm) by the photo-extinction method of kaolin minerals and sediment on the dissymmetry parameter Z45 is given as follows:
Z45=-0.841Dav+8.363
The dissymmetry method with a He-Ne gas laser as a light source is considered applicable to the estimation of the average particle size in the disposal process of factory wastes containing suspended particles, and to the control of particle size in the wastes as well as the quality control in the production process of factory.
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© by The Society of Materials Science, Japan
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