Apparatus for manufacturing silica powder with spherical grains

Details Apparatus for manufacturing silica powder with spherical grains Apparatus for manufacturing silica powder with spherical grains

1997-11-03

1999-04-27

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Means imparting rolling action to discrete charge of stock...

B28B 100

Patent

active

058978887

ABSTRACT:
A device for producing spherical silica grains includes a cylinder having its axis inclined to the horizontal and an inside wall made from a material that is significantly softer than silica. The cylinder has an entry chute for non-spherical silica grains and an exit chute for spherical cylinder grains. A rotary member is rotated at high speed by a drive shaft having its axis coincident with the axis of the cylinder. The rotary member includes at least one paddle vertically aligned with the entry chute so that silica grains entering via the entry chute are thrown by the paddle against the inside wall of the cylinder and follow a path most of which is against the wall before leaving via the exit chute.

REFERENCES:
patent: 3277520 (1966-10-01), Nakahara
patent: 3579719 (1971-05-01), Moriya
patent: 3834850 (1974-09-01), Takewell et al.
patent: 4003232 (1977-01-01), Trendov
patent: 4119393 (1978-10-01), Heian
patent: 4446207 (1984-05-01), Dewitte et al.

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