Heating – With heating gas conveying – agitating – scattering or...
Patent
1976-11-23
1978-06-13
Camby, John J.
Heating
With heating gas conveying, agitating, scattering or...
432106, F27B 1500
Patent
active
040946266
ABSTRACT:
An apparatus for burning cement raw meal to produce cement clinker which includes a pair of parallel suspension preheaters each adapted to receive cement raw meal and hot spent combustion gas for preheating the cement raw meal. Each of the suspension preheaters discharges preheated raw meal into a single calcining furnace. Combustion takes place in the calcining furnace to produce a calcined raw meal. The spent combustion gases from the calcining furnace are supplied in proportional quantities to each of the parallel suspension preheaters. From the calcining furnace, the calcined raw meal is supplied to a rotary kiln for clinkering the calcined raw meal. Hot cement clinker is discharged into a cooler where the clinker is cooled by passing cooling air upwardly therethrough. The cooling air is heated by the hot clinker and the hottest portion is supplied to the rotary kiln and to the calcining furnace to serve as combustion air. The system is particularly designed for use in converting an existing suspension preheater dry process cement plant to an installation employing a flash furnace to thereby increase the capacity of the plant.
REFERENCES:
patent: 3864075 (1975-02-01), Christiansen
patent: 3869248 (1975-03-01), Hirai
patent: 3881861 (1975-05-01), Ritzmann
patent: 3940241 (1976-02-01), Houd
patent: 3986818 (1976-10-01), Deussner et al.
patent: 4014641 (1977-03-01), Shigeyoshi et al.
Boyhont Donald S.
Warshawsky Jay
Camby John J.
Fuller Company
Thomson Frank H.
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