Apparatus for the heat treatment of fine-grained material

Details Apparatus for the heat treatment of fine-grained material Apparatus for the heat treatment of fine-grained material

1976-09-17

1978-05-09

Camby, John J.

Heating

Tumbler-type rotary - drum furnace

Having combustion products generated in or fed to drum

34 57R, 432 4, 432 58, F27B 702, F27B 1500

Patent

active

040884384

ABSTRACT:
An apparatus for the heat treatment of fine-grained material, particularly pulverized raw material for use in the manufacture of cement, the apparatus comprising a preheater composed of a plurality of superimposed cyclones, the preheater feeding a rotary kiln. An exhaust conduit is connected to the rotary kiln and has a combustion zone formed therein. The gas discharge from one of the intermediate cyclones is directed into the combustion zone. The exhaust conduit includes a pair of upper and lower concentric conduits, the upper conduit having its lower end received in spaced relation to the upper end of the lower conduit and terminating at the combustion zone. A fuel feed conduit is disposed between the lower end of the upper conduit and the upper end of the lower conduit. The arrangement provides for a more efficient treatment of finely divided particles with the hot gases.

REFERENCES:
patent: 3452968 (1969-07-01), Shimizu et al.
patent: 3891382 (1975-06-01), Lawall et al.
patent: 3904353 (1975-09-01), Bosshard et al.
patent: 3910754 (1975-10-01), Weber et al.
patent: 3980486 (1976-09-01), Touborg
patent: 4014641 (1977-03-01), Shigeyoshi et al.

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