Determination of Particle Size Distribution of Inorganic Fine Particle Suspensions Using Ultrasonic Attenuation Spectroscopy, Effect of Concentration of Slurry and Particle-Particle Interaction on PSD Evaluation

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  • 超音波減衰法を用いた無機粉体スラリーの粒度分布測定―粒度分布に及ぼすスラリー濃度および粒子間相互作用の影響―
  • チョウオンパ ゲンスイホウ オ モチイタ ムキ フンタイ スラリー ノ リュウド ブンプ ソクテイ リュウド ブンプ ニ オヨボス スラリー ノウド オヨビ リュウシ カン ソウゴ サヨウ ノ エイキョウ

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We have measured the particle size distribution (PSD) of fine alumina particle slurries at various concentrations by ultrasonic attenuation spectroscopy method in order to examine the effectiveness of the concentration range of the particle and particle-particle interaction in highly concentrated slurries.<br>It was found that ultrasonic attenuation spectroscopy can estimate the primary particle size at the concentration of 1∼20 vol% and suggest the development of particle-particle interaction at 30∼40 vol%. Those results showed that this method can be applicable to the evaluation of the primary particle size of 1∼20 vol% slurries and the aggregate particle size of 30∼40 vol% slurries arose by particle-particle interaction for practical process control.

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