F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/34
F27B 7/20 (2006.01) C04B 7/43 (2006.01) F27D 13/00 (2006.01)
Patent
CA 1254739
ABSTRACT OF THE DISCLOSURE A dust preheating system with an incipient cal- cination furnace for powdery material, including a pre- heater having a plural number of dust separators connected one after another in a vertical direction to form a cor- responding number of preheating stages, an incipient calcination furnace located between the preheater and a combustion furnace when seen in the flow direction of the powdery material and connected through a combustion air duct to a clinker cooler located on the downstream side of the combustion furnace, the incipient calcination furnace being provided with an independent fuel feeder and connected through a combustion gas duct to the lowermost dust sepa- rator for calcined material, the second lowest one of the dust separators of the preheater having the dust outlet thereof connected to the incipient calcination furnace, and the lowermost dust separator having a calcined dust outlet connected to an inlet of the combustion furnace, character- ized in that: at least the second lowest one of the dust separators is constituted by a cyclone separator having an opening in the side wall thereof and having a fine dust outlet at the bottom end thereof; and a pocket housing for the coarse dust hermetically connected to the opening and having a coarse dust outlet at the bottom end thereof; the fine and coarse dust outlets being connected to fine and coarse dust feed ports provided at spaced positions in the side wall of the incipient calcination furnace.
472886
Kabushiki Kaisha Kobe Seiko Sho
Riches Mckenzie & Herbert Llp
LandOfFree
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