Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Utilizing centrifugal force
Patent
1975-03-19
1979-06-05
White, Robert F.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Utilizing centrifugal force
264117, B01J 214
Patent
active
041573714
ABSTRACT:
A method of agglomerating fine ore powders. The invention is used to agglomerate extremely fine flue dust particles in a collection bin and process them before sending the resultant agglomeration to storage or a further processing location. From its collection bin, the dust particles are discharged by gravity upon a lower rapidly rotating smooth horizontal disc. The bin discharge is offset slightly from the disc's center so that the particles are subjected to centrifugal force to move them to the disc's outer periphery. At the point where the particles are discharged on the disc, a liquid binder, like water, is sprayed on the particles to cause them to begin to agglomerate. After being sprayed, the wetted particles are agglomerated under the influence of centrifugal and tangential forces. A scraper may be used to aid in pushing the particles towards the disc's raised outer edge. When they reach the disc's raised edge, the particles are completely agglomerated at which time they fall over the edge into a discharge hopper located below. Except for its slightly raised peripheral edge, the horizontal disc surface is almost perfectly smooth. The disc's shape including its slightly raised peripheral edge insure a short residence time for the wetted particles before they are agglomerated and discharged.
REFERENCES:
patent: 3206528 (1965-09-01), Coombs et al.
patent: 3555133 (1971-01-01), Gentaz
Paulson Danton L.
Worthington Robert B.
Gardiner Donald A.
Hall James R.
The United States of America as represented by the Secretary of
White Robert F.
Zack Thomas
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