Method and apparatus for drying or heat treating granular materi

Details Method and apparatus for drying or heat treating granular materi Method and apparatus for drying or heat treating granular materi

1984-08-17

1986-07-01

Camby, John J.

Heating

Work chamber having heating means

Having particulate or liquid heat transfer medium in work...

432118, 432215, F27B 1500, F27B 714

Patent

active

045977372

ABSTRACT:
A method and an apparatus for drying or heat treating granular material fed in a continuous flow. The apparatus comprises a heating container having an inlet end and an outlet end. A heating source is located entirely within the container. An auger conveyor is disposed in the container adjacent the inlet end to displace a particulate medium, capable of retaining heat, from the inlet end to a heat chamber within the container. A transporting mechanism is provided in the heating chamber for showering the particulate medium in direct contact with a flame during a predetermined time so that the medium is quickly heated to an approximate desired temperature. A mixing and drying conveyor mixes and conveys the heated particulate medium with a humid granular material whereby to dry the material by heat transfer between the particulate medium and the granular material. A separator then separates the particulate medium from the granular material. The particulate medium is then recycled while still hot and the dried granular material is recovered.

REFERENCES:
patent: 2872386 (1959-02-01), Aspegren
patent: 4094633 (1978-06-01), Peterson et al.
patent: 4474553 (1984-10-01), Takahashi

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