Extraction agent composition

Details Extraction agent composition Extraction agent composition

1975-09-29

1978-10-17

Lovering, Richard D.

Compositions

Solvents

75101BE, 75117, 75119, 75120, 75121, 252354, 423 24, 423 99, 423139, B01F 100

Patent

active

041208170

ABSTRACT:
An extraction agent composition comprising in addition to one or more conventional extraction agents at least one agent, preferably a strong organic acid, affecting the phase interface tension for diminishing the drop size of the dispersed phase and for accelerating the conversion of the material from one phase to another for the separation of nickel (II) and cobalt (II) from each other from aqueous solutions containing both nickel and cobalt. By using said composition the separation can occur regardless of the type of counter-ion, i.e. said separation can take place from sulphate, nitrate and chloride solutions. Basing the separation on a high chloride content or on the necessity of oxidizing the cobalt being present into a trivalent state has been avoided by the addition of a small amount of strong organic acid.

REFERENCES:
patent: 3276863 (1966-10-01), Drobnick et al.
patent: 3428449 (1969-02-01), Swanson
patent: 3655347 (1972-04-01), Mattison et al.
VanHaranta: "Extraktion Ay Ni(II), Med. Blandade Extraktionsmedel.," Master's Thesis, Approved by Faculty of Chemical Engineering at Abo Akademi, Finland, on Nov. 17, 1972, and accessible in Archive of Faculty from Nov. 17, 1972.

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