The Fundamentals of Particle Size Analysis by Means of Ultrasonic Spectrometry

Riebel, Ulrich; Löffler, Friedrich

doi:10.1002/ppsc.19890060124

Cited by 100 publications

(35 citation statements)

References 19 publications

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“…Particles can be detected using conductivity, polarizability, surface charges, electrophoretic mobility, or magnetizability. Suitable techniques are dielectric spectroscopy or electro-acoustic effects [39,40].…”

Section: Measuring Methods For Particle Propertiesmentioning

confidence: 99%

Disperse Systems, Characterization and Analysis

Polke¹,

Schäfer²

2010

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Properties of Disperse Systems and their Relevance for Process Engineering 2.1. Objectives of Product Characterization 2.1.1. Property Function – Product Model 2.1.2. Process Function – Process Model 2.1.3. Control of the Process Environment 2.1.4. Modeling 2.2. Definition of Measurement and Use of Data 2.3. Measurement Methods 2.4. Mixing Status and Homogeneity 2.5. Sensibility and Kinetics of Disperse Systems 3. Measuring Methods for Particle Properties 4. Measuring Process Technology 5. On‐line Characterization 6. Outlook

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Section: Measuring Methods For Particle Propertiesmentioning

confidence: 99%

Disperse Systems, Characterization and Analysis

Polke¹,

Schäfer²

2010

Ullmann's Encyclopedia of Industrial Chemistry

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“…The distribution of the particles and their size in slurries are connected, with the determination of the attenuation coefficient [5], or/and the velocity of sound. …”

Section: Fig 1 : Wave Trajectory Into the Containermentioning

confidence: 99%

Attenuation Measurement Method to Control Clay Slurries: Application of Dams Water

Hamine¹,

Faiz²,

Moudden³

et al. 2013

IJCA

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We propose to study the behavior of diluated suspensions of clay and non colloidal particles by a combination of experiments. We plan to study these diluate particulate systems by changing the masse fraction of clay. We have developed a technique based on the ultrasound, by measuring ultrasonic attenuation waves in clay slurries. This technique makes it possible to control in real time the presence of the clay grains whose dimension is about 10 micron, using an interface conceived under Labview program. The slurries with different weight of clay were controlled. The detection of weak amount of clay's grains and colloid were provided by the transducer 30Mhz. High sensitivity is obtained by analyzing the attenuation measurements founded from multiple paths through the slurry. The experimental results obtained show that the attenuation of waves due to particles varies linearly with mass fraction and the frequency of transducers. Therefore, such measures of the attenuation at a given frequency give the concentration of clay in the suspension. These frequency charts will be used for the quality control of the dam's water. General Terms0.N.E.P: Office National de l'eau Potable, (National office of drinking water).FFT: Fast Fourier Transform.

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“…In recent years ultrasonic spectroscopy has emerged as a technique that could characterize such particle systems in on-line applications. A great deal has already been written about the use of ultrasound to determine the PSD in dilute slurries and suspensions [2,3]. The basic concept is to measure the frequency-dependent attenuation or velocity of the ultrasound as it passes through the sample.…”

Section: In-line Size Measurementsmentioning

confidence: 99%

In-Line Particle Characterization

Scott

Boxman

Jochen

1998

Part. Part. Syst. Charact.

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The characterization of industrial slurries and emulsions has traditionally relied upon off-line measurements of particle size and shape. Recent advances in sensor technology have made it possible to implement in-line particle characterization on a number of industrial processes, including comminution, crystallization, and emulsification. This paper presents several recent applications of two in-line instruments developed in our laboratory: an ultrasonic instrument used to monitor particle size in slurries during milling operations and to determine droplet sizes in emulsions, and a new in-line video camera for observing the morphology of crystals produced in a commercial process.

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The Fundamentals of Particle Size Analysis by Means of Ultrasonic Spectrometry

Cited by 100 publications

References 19 publications

Disperse Systems, Characterization and Analysis

Disperse Systems, Characterization and Analysis

Attenuation Measurement Method to Control Clay Slurries: Application of Dams Water

In-Line Particle Characterization

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