F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/52
F27B 7/02 (2006.01) C04B 2/10 (2006.01) F27B 7/20 (2006.01)
Patent
CA 1284878
ABSTRACT OF DISCLOSURE An improved process and apparatus for producing sintered material such as dead burned clay, dolomite, magnesite or periclase with the highest particle specific gravity capable from each material. A grinding mill produces raw material which is 100% minus 20 mesh. The ground raw material is supplied to a suspension type preheater and then to a stationary flash calcining system where the material is soft burned at temperatures in the range of 1000° to 1200°C. From the calcining system, the calcined material is immediately supplied to hot briquetting machine where briquettes or nodules are formed. The hot nodules at a temperature of approximately 800°C are then immediately supplied to a rotary kiln which serves as a sintering furnace where the soft burned material is dead burnt at a temperature in the range of 1650° to 1850°C. Hot spent combustion gas from the sintering furnace is supplied to the calcining furnace to serve as preheated secondary air for combustion. The spent hot gas from the calcining furnace is used in the suspension preheater to preheat the raw material.
513466
Fuller Company
Osler Hoskin & Harcourt Llp
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