Application of High-Velocity Fluidized Bed Reactor for Producing Hollow Inorganic Microspheres from Volcanic Glass Particles

Yoshimitsu Uemura; Sumio Nezu; Naoki Hamakawa; Kazuya Ijichi; Yoshihiro Ohzuno; Yasuo Hatate

doi:10.1252/jcej.31.298

Particle Technology and Fluidizaion

Application of High-Velocity Fluidized Bed Reactor for Producing Hollow Inorganic Microspheres from Volcanic Glass Particles

Yoshimitsu Uemura, Sumio Nezu, Naoki Hamakawa, Kazuya Ijichi, Yoshihiro Ohzuno, Yasuo Hatate

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Keywords: Reactor, High-Velocity Fluidization, Volcanic Glass, Shirasu, Hollow Sphere

JOURNAL RESTRICTED ACCESS

1998 Volume 31 Issue 2 Pages 298-301

DOI https://doi.org/10.1252/jcej.31.298

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Abstract

A reactor consisting of a high-velocity fluidized bed reactor with circulating ceramic particles as a thermal medium is proposed to produce hollow inorganic microspheres (so-called Shirasu balloons) from a volcanic glass, Shirasu. Using the reactor, Shirasu balloon production was investigated. Shirasu balloons of 25 μm in average diameter were successfully produced. This is the first work producing Shirasu balloons using a high-velocity fluidized bed reactor.

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