Heating – Tumbler-type rotary - drum furnace – Having combustion products generated in or fed to drum
Patent
1981-11-16
1984-03-06
Camby, John J.
Heating
Tumbler-type rotary - drum furnace
Having combustion products generated in or fed to drum
106100, F27B 702, C04B 702
Patent
active
044351593
ABSTRACT:
An apparatus is disclosed for burning cement clinker which includes a preheater with inlet and outlet for heating gas and inlet and outlet for pulverous cement raw material, a suspension calciner with inlets for fuel, combustion air and preheated raw materials, outlet for combustion gas connected to the heating gas inlet of the preheater, and outlet for calcined material, communicating with the material inlet of a sintering furnace. The sintering furnace includes an inlet for fuel and combustion air, outlet for combustion gas communicating with the heating gas inlet of the preheater and an outlet for the sintered product connected to the material inlet of an air cooler for cooling the sintered product. The air cooler includes an air outlet connected both to the air inlet of the sintering furnace and to the air inlet of the suspension calciner. The sintering furnace is preferably in the form of a cylindrical drum rotatable around a slightly inclined axis and includes a suspension inlet duct provided with a material inlet and having a first end connected to the air outlet of the cooler and a second end connected to the upper end of the sintering drum substantially tangentially to the inner circumferential surface of the sintering drum. A fuel inlet or fuel inlets project into the suspension inlet of the sintering drum and/or into the suspension inlet duct. A combustion gas outlet duct is connected to one end of the sintering drum, and an outlet is provided for the sintered product at the lower end of the sintering drum.
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Camby John J.
F. L. Smidth & Co.
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