US 4,790,487 A · Continuos granulator

Abstract

A continuous granulator includes a granulator body for continuously processing powdered materials into granules, and a screw conveyor for discharging the produced granules from the granulator body, the screw conveyor including a pneumatic classifier for separating or classifying the produced granules while they are being conveyed. The pneumatic classifier includes a porous lower portion of the screw conveyor which permits passage of streams of pressurized air therethough into the interior of the screw conveyor. With this construction, discharging conveyance of the produced granules and classification of the produced granules can be carried out concurrently at the same station and hence the granules of a uniform grain size can be produced at an increased rate.

Claims25

Dependent claims

Apparatus for continuously processing powdered materials into granules of a given classified size, comprising:

a fist stage having means for continuously processing powdered materials into granules;
first conveying means for continuously conveying granules and ungranulated powered materials from the first stage;
and a second stage connected to continuously receive the conveyed granules and ungranulated powdered materials and having pneumatic separating means for pneumatically separating granules of a given classified size from the other granules and ungranulated powdered materials, means for returning the other granules and ungranulated powdered materials to the first stage for re-use, and second conveying means for continuously conveying the granules of given classified size through the second stage for discharge from the apparatus.

Dependencies are inferred from the claim text.

Continuos granulator

Life of this patent

Continuos granulator

Life of this patent

Abstract

Claims25