F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/20, 39/34
F27B 15/00 (2006.01) C04B 7/43 (2006.01)
Patent
CA 1085612
ABSTRACT OF THE DISCLOSURE 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 there- through. 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 suspen- sion preheater dry process cement plant to an installation employing a flash furnace to thereby increase the capacity of the plant.
289669
Boyhont Donald S.
Warshawsky Jay
Fuller Company
Osler Hoskin & Harcourt Llp
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