The development of the measurement of particle concentration using a commercial laser diffraction particle size analyzer |
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| Affiliation: | 1. 1 Seishin Enterprise Co., Ltd., 5-27-7 Sendagaya, Shibuya-ku, Tokyo 151-0051, Japan;2. 2 Department of Material Science and Chemical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama-shi, Kanagawa-ken, Japan;1. State Key Laboratory on High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;3. Tokyo University of Agriculture and Technology, Tokyo 183-8538, Japan;1. Department of Energy Engineering, School of Energy and Chemical Engineering, Low Dimensional Carbon Materials Center, Perovtronics Research Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea;2. Department of Physics, Pukyong National University, 45 Yongso-ro, Nam-Gu, Busan 48513, Republic of Korea;3. Department of Materials Physics, Dong-A University, Busan 604-714, Republic of Korea;1. Laboratoire ICube, Université de Strasbourg, 2, rue Boussingault, 67000 Strasbourg, France;2. UBERTONE, 4 rue Boussingault, 67000 Strasbourg, France;3. GEMCEA, 149, rue Gabriel Péri, 54500 Vandoeuvre-les-Nancy, France;4. Laboratoire Réactions et Génie des Procédés – UMR CNRS 7274, Université de Lorraine, 1, rue Grandville, BP 20451, F-54001 Nancy cedex, France |
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| Abstract: | A laser diffraction particle size analyzer based on the Fraunhofer diffraction theory has the advantages of real-time measurement of particle size distribution over a broad range. However, the dispersed particle number concentration is not displayed in commercially available analyzers. The method of measuring the dispersed particle number concentration was investigated for different particles having various shapes, i.e. spherical, cubical and prismoidal with a log-normal distribution, by considering the characteristics of the measured voltage of the set detector in relation to the diffracted light intensity using a commercial laser diffraction particle size analyzer. As a result, an approximate equation for the particle number concentration was proposed expressing the measured median diameter and the highest voltage measured by the detector. This equation was applicable to particles having various shapes, i.e. spherical, cubical and prismoidal. Furthermore, this technique can be used for the continuous measurement of the particle number concentration of growing crystals in the crystallizer for crystallization operation. |
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