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Solvent extraction of impurity metals from a valuable metal sulphate solution

  • US 20030064013A1
  • Filed: 10/15/2002
  • Published: 04/03/2003
  • Est. Priority Date: 12/24/1999
  • Status: Active Grant
First Claim
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1. A method of pre-equilibrating a cationic solvent extractant, said method involving contacting the cationic extractant with a portion of a purified valuable metal stream wherein valuable metal ions of said portion of the purified stream are loaded on the cationic extractant to form a pre-equilibrated cationic extractant.

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