Heating – Tumbler-type rotary - drum furnace
Patent
1988-10-13
1989-08-29
Yuen, Henry C.
Heating
Tumbler-type rotary - drum furnace
432106, 432 14, F27B 702
Patent
active
048612650
ABSTRACT:
The invention relates to apparatus and to a method for the heat treatment of fine-grained material using a multi-stage cyclone preheater and a combustion chamber supplied with tertiary air from the cooler, in which the branched part of the tertiary air pipe extends upwards and the material discharged from the second-lowest stage of the cyclone preheater is introduced into one branch pipe at a point which lies lower than the point at which this branch pipe is connected to the combustion chamber. In this way good dispersal of the material which is delivered pneumatically to the combusion chamber and excellent combustion conditions are achieved at the same time as a considerable reduction in the overall height of the entire cyclone preheater.
REFERENCES:
patent: 3881862 (1975-05-01), Nishida et al.
patent: 4392822 (1983-07-01), Brachthauser
patent: 4514170 (1985-04-01), Kupper
patent: 4747879 (1988-05-01), Wolter et al.
Dreyer Dieter
Driemeier Gunter
Durr Manfred
Heinemann Otto
Krutzner Karl
Krupp Polysius AG
Yuen Henry C.
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