Method for densification of powdery silica and article formed th

Details Method for densification of powdery silica and article formed th Method for densification of powdery silica and article formed th

1985-07-22

1987-07-14

Lindsay, Robert

Glass manufacturing

Processes

Forming product or preform from molten glass

65 181, 264114, 428402, C03B 37027

Patent

active

046800433

ABSTRACT:
A powdery substance, such as for example pyrogenically prepared silicon dioxide, is subjected to predensification through the utilization of centrifugal force in a centrifuge. Subsequently, the centrifuge receptacles are closed with a free flying piston. Through utilization of the centrifugal force, there is achieved through the use of the free flying piston an additional pressure which is exerted on the predetermined powdery substance.

REFERENCES:
patent: 2304723 (1942-12-01), Wolff et al.
patent: 2960723 (1960-11-01), Stark
patent: 3888662 (1975-06-01), Boeckeler
patent: 4271114 (1981-06-01), Ohno

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