Patent ID: 7787984

Claim:
A sphering apparatus comprising: a sphering furnace, at the top of which a sphering burner is provided in a vertically downward direction, on the body of which a plurality of adhesion-preventing air-introducing holes is formed, and at a lower part of which a carrier air-introducing hole and a carrier air-withdrawing hole are formed; an air blower connected to the plurality of adhesion preventing air-introducing holes and the carrier air-introducing hole through a first pipe; a cyclone connected to the carrier air-withdrawing hole through a second pipe; a bag filter connected to the cyclone through a third pipe; a cooling air-introducing section provided on the third pipe; and a suction blower connected to the bag filter through a fourth pipe, wherein one end of the first pipe is connected to a discharging part of the air blower, the other end of the first pipe is biforked, one biforked end is connected to the carrier air-introducing hole, the other biforked end is connected to a manifold bundling the plurality of adhesion preventing air-introducing holes, and a first damper is provided in any one of two pipes in the biforked part of the first pipe.