C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/375
C22B 19/20 (2006.01) C01G 9/00 (2006.01) C01G 11/00 (2006.01) C01G 39/00 (2006.01) C01G 53/00 (2006.01) C22B 3/38 (2006.01)
Patent
CA 1214650
PROCESS FOR THE RECOVERY OF CADMIUM AND OTHER METALS FROM SOLUTION ABSTRACT OF THE DISCLOSURE A process for the selective recovery of cadmium, molybdenum, zinc, nickel and other metal values from wet process phosphoric acid and other acidic to slightly basic carrier solutions, wherein the metal-bearing solution is contacted with an organophosphene extractant to precipitate the metal values for subsequent separation from the solution. Separation may be effected by mechanical means or by scrubbing with a water-immiscible organic solvent such as kerosene for subsequent recovery of the metal values. The metal specie recovered is determined by the concentration of the organophosphene, which may be selectively adjusted to recover a series of metal values in a sequence of stages.
442276
Bierman Laurence W.
Hempel David A.
Humberger Roger B.
Polinsky Samuel M.
Gowling Lafleur Henderson Llp
Simplot (j. R.) Company
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