Method of employing elemental zinc for the purification of aqueo

Details Method of employing elemental zinc for the purification of aqueo Method of employing elemental zinc for the purification of aqueo

1976-09-27

1978-03-07

Stern, Edward

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

423544, 75109, C01G 906

Patent

active

040780406

ABSTRACT:
An improved technique for purifying a solution of metallic salts from copper and cadmium contained in such solution is described. A bed of zinc granules is disposed on a grid at the bottom of a vertically arranged, cylindrical reaction chamber. The solution to be purified is pumped upwardly through the grid and the zinc bed at a speed in the range of 0.08-0.5 m/sec. to impart a turbulent motion to the zinc granules throughout the height of the reaction chamber. The turbulence causes the copper-cadmium cake adhering to the zinc particles during the reaction to separate from the granules, so that the separated cake flows out of the reaction chamber with the purified liquid to be quickly and easily removed therefrom.

REFERENCES:
patent: 1341601 (1920-05-01), Sulman et al.
patent: 1587695 (1926-06-01), Campbell
patent: 1733676 (1929-10-01), Stevens et al.

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