Method for precipitating and separating metals

Details Method for precipitating and separating metals Method for precipitating and separating metals

1988-10-26

1993-01-12

Wyszomierski, George

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 43, 423 48, 423140, 423146, C22B 344

Patent

active

051788420

ABSTRACT:
According to the method of the invention, at least one or several of the metals nickel, cobalt and copper can be selectively precipitated as sulphide by aid of elemental sulphur from aqueous solutions containing other metals such as zinc. The temperature of the reaction is above the melting point of sulphur. The precipitation is carried out with a pH value below 2. The metals to be precipitated can be present in the solution either as oxides or sulphates. If the metals are sulphates, the sulphide of at least one of the metals is prepared to crystal seeds in the solution before precipitation.

REFERENCES:
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patent: 2362216 (1944-11-01), Reed
patent: 3088803 (1963-05-01), Mackiw et al.
patent: 3218161 (1965-11-01), Kunda et al.
patent: 3450495 (1969-06-01), Thornhill et al.
patent: 3459535 (1969-08-01), Vizsolyi et al.
patent: 3660022 (1972-05-01), Staker et al.
patent: 3728430 (1973-04-01), Clitheroe et al.
patent: 3937657 (1976-02-01), Parker et al.
patent: 4097271 (1978-06-01), Swinkels et al.

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