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MOLYBDENUM RECOVERY FROM AQUEOUS NITRIC ACID SOLUTION BY SOLVENT EXTRACTION

United States Patent Application

20170037492
A1
View the Complete Application at the US Patent & Trademark Office
The invention provides a method for extracting transition metals, the method comprising supplying a feedstream containing transition metal, mixing the feedstream with nitric acid for a time and at a concentration sufficient to form an aqueous phase containing the transition metal, combining the aqueous phase with organic extractant phase for a time and at a concentration sufficient to cause the transition metal to reside within the organic extractant phase, and combining the transition metal-containing organic extractant phase with an hydroxamic acid-containing aqueous phase at a concentration and for a time sufficient to cause the transition metal to reside in the hydroxamic acid-containing aqueous phase.
Gelis, Artem V. (Naperville, IL), Brown, Michael Alexander (Chicago, IL)
UCHICAGO ARGONNE, LLC (Chicago IL)
14/ 819,105
August 5, 2015
CONTRACTUAL ORIGIN OF THE INVENTION [0001] The U.S. Government has rights in this invention pursuant to Contract No. DE-AC02-06CH11357 between the U.S. Department of Energy and UChicago Argonne, LLC, representing Argonne National Laboratory.