Method for purifying particulate mould material

Details Method for purifying particulate mould material Method for purifying particulate mould material

1978-02-21

1980-05-20

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

134 25R, 164 5, 165 2, B08B 100

Patent

active

042037778

ABSTRACT:
Method for purifying foundry sand which involves the passage of sand through layers of steel wool supported on perforated discs mounted on a vertical shaft in a standpipe. Perforations in the sides of the standpipe permit air to be blown through the sand as it drops down through the steel wool. The vertical shaft supporting the discs and steel wool is vibrated to cause the sand to move through and past the packs of steel wool.

REFERENCES:
patent: 1645317 (1927-10-01), Carroll
patent: 1787878 (1931-01-01), Warden-Stevens
patent: 2233728 (1941-03-01), Bell
patent: 2420376 (1947-05-01), Johansson
patent: 2835941 (1958-05-01), Muller
patent: 3686034 (1972-08-01), Rothschild
Giesserei-Praxis, 1961, p. 156.

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