David Wayne Meadows, 55676 Kingsbury Rd, Lexington, KY 40509

8420048, Apr 16, 2013

Dec 20, 2011

13/331699

Anand Raman - Phoenix AZ, US
Jason M. Morgan - Morenci AZ, US
Barbara J Savage - Silver City NM, US
David G Meadows - Phoenix AZ, US
Wayne W Hazen - Lakewood CO, US

Freeport-McMoran Corporation - Phoenix AZ

C21B 15/00

4236585, 423 24

The present disclosure relates to a process and system for recovery of one or more metal values using solution extraction techniques and to a system for metal value recovery. In an exemplary embodiment, the solution extraction system comprises a first solution extraction circuit and a second solution extraction circuit. A first metal-bearing solution is provided to the first and second circuit, and a second metal-bearing solution is provided to the first circuit. The first circuit produces a first rich electrolyte solution, which can be forwarded to primary metal value recovery, and a low-grade raffinate, which is forwarded to secondary metal value recovery. The second circuit produces a second rich electrolyte solution, which is also forwarded to primary metal value recovery. The first and second solution extraction circuits have independent organic phases and each circuit can operate independently of the other circuit.

2013012, May 16, 2013

Jan 8, 2013

13/736568

David G. Meadows - Phoenix AZ, US
Wayne W. Hazen - Lakewood CO, US

FREEPORT-MCMORAN CORPORATION - Phoenix AZ

C22B 3/26

4236585

The present invention relates generally to a process for controlled leaching and sequential recovery of two or more metals from metal-bearing materials. In one exemplary embodiment, recovery of metals from a leached metal-bearing material is controlled and improved by providing a high grade pregnant leach solution (“HGPLS”) and a low grade pregnant leach solution (“LGPLS”) to a single solution extraction plant comprising at least two solution extractor units, at least two stripping units, and, optionally, at least one wash stage.