公开(公告)号：US20200048733A1

公开(公告)日：2020-02-13

申请号：US16458905

申请日：2019-07-01

Applicant: Cytec Industries Inc.

Inventor： Luis Moya ,  Matthew Dean Soderstrom ,  Adam James Fischmann ,  Michael Moser ,  Lei Zhang

IPC: C22B7/00

Abstract: A hydrometallurgical solvent extraction method includes mixing an aqueous metal ion solution with an organic solution of metal extraction reagent to form a mixture, and allowing the aqueous metal ion solution and organic solution to phase separate from the mixture; wherein prior to mixing the aqueous metal ion solution and the organic solution, a water-soluble or water-dispersible polymer comprising pendant sulfonic acid or sulfonate salt groups selected from the group consisting of sulfonated polystyrene; an addition polymer including at least one of styrene-4-sulfonic acid and 2-acrylamido-2-methylpropane sulfonic acid; naphthalene sulfonic acid-formaldehyde condensate; lignosulfonate; salts thereof; and mixtures thereof, is added to the aqueous metal ion solution, the organic solution, or to both the aqueous metal ion solution and the organic solution. The water-soluble or water-dispersible polymer can also be added simultaneously with or after mixing of the aqueous metal ion solution and the organic solution.