Apparatus for thermal treatment of moist raw material

Details Apparatus for thermal treatment of moist raw material Apparatus for thermal treatment of moist raw material

1975-08-20

1976-12-21

Camby, John J.

Heating

Processes of heating or heater operation

Including passing, treating or conveying gas into or through...

34 57R, 432 58, 432106, F27B 1500, F26B 1700

Patent

active

039985830

ABSTRACT:
Method and apparatus for the thermal treatment of moist raw pulverulent material, particularly slurries of raw cement material, wherein a plurality of gas and material separators are connected in series, the material to be treated is introduced between the last separator and the next-to-the-last separator and penetration of infiltrated air into the gas stream is prevented by a blower in advance of the zone of introduction of the raw material.
The blower prevents a large pressure differential at the point of material supply and at the same time accommodates maintenance of a high vacuum and rate of flow of gas for the transporting of the material. The gas conduit leading to the last separator has an elongated riser so that the moist material introduced into the gas stream is maintained in contact with the hot gases for a long period to effect efficient pre-drying of the material.

REFERENCES:
patent: 3738794 (1973-06-01), Thelen
patent: 3884620 (1975-05-01), Rammler

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