Plastic article or earthenware shaping or treating: apparatus – Tumbling type agglomerating means for particulate material
Patent
1977-09-19
1979-01-30
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
Tumbling type agglomerating means for particulate material
432118, 34168, 23313R, B29B 102
Patent
active
041370295
ABSTRACT:
A method and apparatus are disclosed for drying and pelletizing organic material such as animal waste, sewage and the like. The organic material is dried in two stages using a high temperature, rotating primary drying drum, and a lower temperature secondary louvred drying drum. The primary drum includes an inlet section and an outlet section. The inlet section includes a plurality of transverse chain curtains for increased heat transfer to the organic material, for breaking up the organic material and for cleaning the sides of the drum. The primary drum outlet section includes a plurality of vanes angularly attached to the inside of the drum to form an auger to retain the material in the drum until it is partially dried to a desired level. The organic material is then transported to the secondary louvred layer. The louvred dryer includes an input section, an output section and a central pelletizing section formed by adjacent portions of the input and output sections. The louvred dryer input section is connected to a supply of heated air and the louvred dryer output section is connected to a supply of cooling air. An adjustable baffle is located in the pelletizing section for use when it is desired to pelletize the organic material. The baffle defines a continuous cylindrical rolling surface which blocks the air flow through the louvres in the pelletizing section and which rolls the organic material to form pellets. The longitudinal location and the longitudinal length of the baffle may be adjusted for controlling the point where pelletizing begins and for controlling the size of the pellets. Suitable air-pollution apparatus is provided to prevent atmospheric pollution.
REFERENCES:
patent: 1857785 (1932-05-01), Holzapfel
patent: 2314836 (1943-03-01), Seil
patent: 3145979 (1964-08-01), Madsen
patent: 3641683 (1972-02-01), Preeman
patent: 4014643 (1977-03-01), Musha et al.
Cannon Limited
Spicer, Jr. Robert L.
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