Separation of cobalt from nickel in ammoniacal solutions using 8

Details Separation of cobalt from nickel in ammoniacal solutions using 8 Separation of cobalt from nickel in ammoniacal solutions using 8

1975-11-17

1977-03-15

Peters, G. O.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423139, C01G 5100, C01G 5312, C01G 300

Patent

active

040124835

ABSTRACT:
This invention provides a method for selectively extracting cobalt value from an aqueous ammoniacal solution containing dissolved nickel and cobalt. The solution is contacted, at a pH of at least about 8.5, with an organic solution of a hydrocarbon-substituted 8-hydroxyquinoline while maintaining the pH of the aqueous solution at least at about 8.5. by adding ammonia or ammonium hydroxide. There are also dissolved in the aqueous solution ammonium ion and halide ion. The cobalt value is selectively extracted into the organic solution which is then separated from the aqueous solution; the cobalt can be stripped from the organic solution.

REFERENCES:
patent: 3380801 (1968-04-01), Williams et al.
patent: 3637711 (1972-01-01), Budde et al.
patent: 3743585 (1973-07-01), Lowenhaupt et al.
Morrison et al. Solvent Extraction in Analytical Chemistry John Wiley and Sons, New York 1957 pp. 164.

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