Journal of Chemical Engineering of Japan, Vol.31, No.2, 298-301, 1998
Application of high-velocity fluidized bed reactor for producing hollow inorganic microspheres from volcanic glass particles
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 mu m in average diameter were successfully produced. This is the first work producing Shirasu balloons using a high-velocity fluidized bed reactor.