Phelps Dodge Corporation

Freeport Minerals Corporation

Freeport-mcmoran Corporation

Bloom Energy Corporation

Hazen Research, Inc.

Freepoint-mcmoran Corporation

Phelphs Dodge Corporation

Wayne Werneke Hazen

David R Baughman

Joanna M Robertson

John O Marsden

Philip Thompson

Robert E Brewer

David G Meadows

Barbara J Savage

Jason Moore Morgan

Christel M A Bemelmans

Roland Schmidt

Anand Raman

John C Wilmot

Jay Charles Smith

Thomas R Bolles

Dennis D Gertenbach

George Owusu

James D Gillaspie

Lawrence D May

Susan R Brewer, Legal Representative

Susan R Brewer

Christopher Jeffrey Hartley

Lunzhi Liao

Justin McAllister

Brook Forest Porter

Kang Sun

Michael Shang-Yu Yang

Peter Amelunxen

Chris Easton

Christel Maria Angelina Bemelmans

Christy Green

Pavel Federovich Belits

Timothy James Lanyk

Phillip Thompson

The present disclosure relates to a metal recovery process comprising a solvent extraction process. In an exemplary embodiment, the solution extraction system comprises a plant with a first and second circuit. A high-grade pregnant leach solution ('HGPLS') is provided to the first and second circuit, and a low-grade pregnant leach solution (“LGPLS”) is provided to the second circuit. The first circuit produces a rich electrolyte, which can be forwarded to a primary metal recovery, and a low-grade raffinate, which can be forwarded to a secondary metal recovery process. The second circuit produces a rich electrolyte, which can also be forwarded to the primary metal recovery process. The first and second circuits are in fluid communication with each other.

System and method including multi-circuit solution extraction for recovery of metal values from metal-bearing materials

The present disclosure relates to a metal recovery process comprising a solvent extraction process. In an exemplary embodiment, the solution extraction system comprises a plant with a first and second circuit. A high-grade pregnant leach solution ('HGPLS') is provided to the first and second circuit, and a low-grade pregnant leach solution ('LGPLS') is provided to the second circuit. The first circuit produces a rich electrolyte, which can be forwarded to a primary metal recovery, and a low-grade raffinate, which can be forwarded to a secondary metal recovery process. The second circuit produces a rich electrolyte, which can also be forwarded to the primary metal recovery process. The first and second circuits are in fluid communication with each other.

A process and system is provided for recovery of one or more metal values using solution extraction techniques and 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.

System and method for parallel solution extraction of one or more metal values from metal-bearing materials

The present invention relates to the recovery of rare earths, scandium, niobium, tantalum, zirconium, hafnium, titanium, and the like from ores or concentrates containing fluorine. More specifically, the ores or concentrates are pretreated by carbochlorination to convert the rare earths and other metals into their chlorides and then subjected to dilute hydrochloric acid leaching to recover the valuable rare earths and other metals from the leachate. Niobium, tantalum, zirconium, hafnium, and titanium can be recovered as their chlorides or oxychlorides from the gaseous products of carbochlorination, or converted into their oxides while simultaneously regenerating chlorine.

Recovery of rare earths from concentrates containing fluorine

Various embodiments provide a process roasting a metal bearing material under oxidizing conditions to produce an oxidized metal bearing material, roasting the oxidized metal bearing material under reducing conditions to produce a roasted metal bearing material, and leaching the roasted metal bearing material in a basic medium to yield a pregnant leach solution.

Systems and methods for copper recovery via roasting and leaching

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.

Systems and methods for metal recovery

A method for selectively removing scandium from a scandium-containing feed solution includes contacting the scandium-containing feed solution with a solvent stream in plural stages using cross current extraction, in which the solvent is loaded with at least a portion of the scandium from the feed solution, and/or ion exchange, and separating the loaded solvent from remaining scandium-containing feed solution.

Methods of recovering scandium from titanium residue streams

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Lakewood, CO, United States of America

Wayne Werneke Hazen