Method and apparatus for burning pulverulent materials

Heating – Processes of heating or heater operation – Including passing – treating or conveying gas into or through...

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432 78, 432 80, 432106, F27B 1516

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active

039389499

ABSTRACT:
A method and apparatus is disclosed for burning pulverous or granular material, particularly cement raw material to cement clinker. Burning of the pulverous material is accomplished in a plant which includes a suspension preheater, a rotary kiln and a separate rotary cooler unit having an inlet end and an outlet end, for cooling the burnt material exiting from the kiln by means of air which is subsequently used for combustion and preheating purposes. The method comprises dividing the heated cooling air into at least two streams, directing the divided heat cooling air out of both ends of the rotary cooler unit in its divided streams, directing at least one stream to the rotary kiln to be used as combustion air, directing exhaust gases from the rotary kiln to the preheater to preheat the material, and directing the other stream of heated cooling air to the preheater to preheat the material prior to being burnt in the rotary kiln.

REFERENCES:
patent: 1468168 (1923-09-01), Pike
patent: 2218476 (1940-10-01), Newhouse
patent: 2283129 (1942-05-01), Roubal
patent: 3834860 (1974-09-01), Fukuda

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