Nickel extraction with oxime extractants

Details Nickel extraction with oxime extractants Nickel extraction with oxime extractants

C - Chemistry, Metallurgy

22

B

53/308

C22B 3/30 (2006.01) C01G 53/00 (2006.01) C22B 3/26 (2006.01) C22B 3/40 (2006.01)

Patent

CA 1338345

The recovery of nickel from aqueous ammoniacal solutions con- taining nickel values by extraction of the nickel values therefrom with an organic solution containing an oxime extractant and an equilibrium modifier followed by stripping of the nickel values from the organic solution by a concentrated aqueous ammoniacal solution from which the nickel can then be recovered. The use of the equilibrium modifier and the concentrated ammonia stripping solution provides advantages in that (1) there is an increase in the nickel transfer of the reagent, (2) the strip solution can be built to a higher nickel concentration giving a lower volume nickel containing solution for further processing and (3) a lesser number of stripping stages are required.

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