Apparatus for extracting alumina from bauxite

Details Apparatus for extracting alumina from bauxite Apparatus for extracting alumina from bauxite

1979-04-02

1980-12-09

Coe, Philip R.

Agitating

Stirrer within stationary mixing chamber

Rotatable stirrer

366329, B01F 718

Patent

active

042381592

ABSTRACT:
A supersaturated solution of ground bauxite and caustic soda is fed to a plurality of stirrer tanks in a product cascade. Each of these stirrer tanks of the product cascade has three vertically spaced zones with differing solid contents, a central vertical shaft and at least three vertically spaced paddles carried on the shaft and each extending into a respective one of the zones. The paddles are so constructed as to differently act on the solid in dependence upon the solid contents in each zone.

REFERENCES:
patent: 3374989 (1968-03-01), Todtenhaupt
patent: 3671019 (1972-06-01), Tapscott et al.

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