PURPOSE: To considerably increase the rate of capturing of powder in a cyclone by melting and sphering inorg. powdery starting material in a high temp. flame formed in a furnace, irradiating exhaust gas contg. the resulting sphered particles with ultrasonic wave and capturing the particles from the exhaust gas.
CONSTITUTION: A high temp. flame is formed in a furnace 6, inorg. powdery starting material is melted and sphered in the flame and the resulting sphered particles are captured from exhaust gas. At this time, the exhaust gas in an exhaust duct 13 is irradiated with ultrasonic wave by ultrasonic vibrating plates 20 and then the sphered particles are captured. Water may be blown into the exhaust gas before the application. The rate of capturing of powder in a cyclone 8 can be considerably increased, load put on a bag filter 9 can be reduced and the filter 9 is hardly blocked.
TERAMOTO TOYOKAZU
FURUYA SHIGERU
SAKAI TADAYUKI
KITAHARA MASATO
NAKANO KOICHIRO
