Process for pelletizing wet siliceous particulates

Details Process for pelletizing wet siliceous particulates Process for pelletizing wet siliceous particulates

1975-03-07

1978-05-02

Emery, Stephen J.

Chemistry: physical processes

Physical processes

Agglomerating

23313AS, 264117, B01J 212, C01B 3312, C01B 3320

Patent

active

040872548

ABSTRACT:
An improved process for pelletizing siliceous materials produced in an aqueous medium is disclosed. The process comprises the improvement of filtering the aqueous medium in which the siliceous materials are produced or refined, forming a slurry of the filter cake obtained by filtration and thereafter introducing the slurry directly into a pelletizer. The pellets thus formed are dried and a portion thereof recycled to the pelletizer so that the solids content of the slurry has a predetermined solids content. The process obviates the need for an initial drying of the filter cake, reduces the drying of excess water at several steps and provides for the recycling and use of unsatisfactory materials.

REFERENCES:
patent: 2024176 (1935-12-01), Lloyd
patent: 2686161 (1954-08-01), Stewart
patent: 3387931 (1968-06-01), Burke
patent: 3401017 (1968-09-01), Burke
patent: 3623858 (1971-11-01), Smith
Browning, Chemical Engineering, "Agglomeration," Dec. 4, 1967, McGraw-Hill, New York, pp. 147-149, 165, 166.

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