PURPOSE: To enable the continuous stable operation of a burning furnace without variation in temp. and to enable the falling and the discharging causing no sticking and clogging by providing the falling passage of a granulated material having controlling means of jet stream gas volume along the axial line direction at the throat part connecting the burning furnace and a granulating furnace.
CONSTITUTION: The falling passage 12 of a granulated material having U-shaped plane shape is provided along the axial line direction at one side of the throat part 11 connecting a burning furnace 6 and a granulating furnace 3. The controlling plate 13a and 13b of jet stream gas volume which has the shape compatible to form the section of the falling passage 12 is provided slidablly in the horizontal direction respectively at the upper and lower parts of the falling passage 12. For example, when the plate 13b enters into the passage 12, the gas velocity jetting in the passage 12 is reduced than that at other throut part, the granulated material at the jet stream fluidized bed part corresponding to the passage 12 enters into the passage 12 and discharged and supplied to the burning furnace 6. Sticking and clogging are prevented because the granulated material capable of resistance to the gas velocity jetting in the passage 12 falls vertically and continuously.
MUKAI KATSUHARU
ISHIBACHI TOSHIYUKI
HASHIMOTO ISAO
MURAO MIKIO
KANAMORI SHOZO
KAWASAKI HEAVY IND LTD