Definition of the New Mean Particle Size Based on the Settling Velocity in Liquid

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  • Tambun Rondang
    Division of Chemical and Materials Engineering, Graduate School of Engineering, Muroran Institute of Technology Department of Chemical Engineering, University of Sumatera Utara
  • Shimadzu Masamitsu
    Division of Applied Sciences, Graduate School of Engineering, Muroran Institute of Technology
  • Ohira Yuichi
    Division of Applied Sciences, Graduate School of Engineering, Muroran Institute of Technology
  • Obata Eiji
    Division of Applied Sciences, Graduate School of Engineering, Muroran Institute of Technology

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New analysis and a definition of the new mean particle size have been discovered by rediscussing theory of the buoyancy weighing-bar method, which is a type of sedimentation methods. This paper proposes a new mean particle size based on the settling velocity in liquid. The velocity mean size of all particles [equation], which is the new mean particle size defined in this paper by the buoyancy weighing-bar method, is given as follow.<br>[equation]<br>ΔGi is the buoyancy difference mass of particles xi. Homogenous particles and a ternary mixture of spherical glass beads are used as the samples. Although the buoyancy weighing-bar method is also time-consuming, the maximum particle size and the mean particle size can be derived within a short time after initiating measurement.

収録刊行物

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