Patents by Inventor Wayne W. Hazen
Wayne W. Hazen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9340849Abstract: 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.Type: GrantFiled: December 17, 2012Date of Patent: May 17, 2016Assignee: FREEPORT MINERALS CORPORATIONInventors: Joanna M Robertson, Thomas R Bolles, Wayne W Hazen, Lawrence D May, Jay C Smith, David R Baughman
-
Publication number: 20160053341Abstract: 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.Type: ApplicationFiled: October 22, 2015Publication date: February 25, 2016Applicant: FREEPORT MINERALS CORPORATIONInventors: Jason M. Morgan, Barbara J. Savage, David G. Meadows, Wayne W. Hazen
-
Publication number: 20150361527Abstract: 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.Type: ApplicationFiled: August 21, 2015Publication date: December 17, 2015Applicant: FREEPORT MINERALS CORPORATIONInventors: Anand Raman, Jason M. Morgan, Barbara J. Savage, David G. Meadows, Wayne W. Hazen
-
Patent number: 9169533Abstract: 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.Type: GrantFiled: December 20, 2011Date of Patent: October 27, 2015Assignee: FREEPORT MINERALS CORPORATIONInventors: Jason M Morgan, Barbara J Savage, David G Meadows, Wayne W Hazen
-
Patent number: 9023313Abstract: 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.Type: GrantFiled: March 14, 2013Date of Patent: May 5, 2015Assignee: Freeport Minerals CorporationInventors: Anand Raman, Jason M Morgan, Barbara J Savage, David G Meadows, Wayne W Hazen
-
Patent number: 8920773Abstract: 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, leaching the roasted metal hearing material in a basic medium to yield a pregnant leach solution, conditioning the pregnant leach solution to thrill a preprocessed metal bearing material; and leaching the preprocessed metal bearing material in acid medium.Type: GrantFiled: December 17, 2012Date of Patent: December 30, 2014Assignee: Freeport Minerals CorporationInventors: Joanna M. Robertson, Thomas R. Bolles, Wayne W. Hazen, Lawrence D. May, Jay C. Smith, David R. Baughman
-
Publication number: 20140262816Abstract: Various embodiments provide a method comprising leaching a cobalt bearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, performing a solution extraction of the cobalt bearing liquid phase to yield a purified cobalt bearing liquid phase, precipitating cobalt gypsum by adding lime to a first portion of the purified cobalt bearing liquid phase, and recycling the cobalt gypsum to the leaching.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: FREEPORT-MCMORAN CORPORATIONInventors: Nitin Goel, Ari Gabriel Partanen, Wayne W. Hazen, Phil Rooke
-
Publication number: 20140262814Abstract: Various embodiments provide a method comprising electrowinning a first portion of a conditioned cobalt bearing solution to yield cobalt metal, subjecting a second portion of a conditioned cobalt bearing solution to a first ion exchange to yield a second conditioned cobalt bearing solution, performing cobalt selective solution extraction on the second conditioned cobalt bearing solution to yield a refined cobalt containing liquid and, precipitating a cobalt salt by adding a precipitating agent to a first portion of the refined cobalt containing liquid.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: FREEPORT-MCMORAN CORPORATIONInventors: Nitin Goel, Ari Gabriel Partanen, Wayne W. Hazen, Phil Rooke
-
Publication number: 20140262815Abstract: Various embodiments provide a method comprising producing a cobalt hydroxide bearing material, leaching the cobalt hydroxide hearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, performing a solution extraction of the cobalt bearing liquid phase to yield a purified cobalt bearing liquid phase, conditioning a first portion of the purified cobalt bearing liquid phase to yield a conditioned cobalt bearing solution and, electrowinning the conditioned cobalt bearing solution to yield cobalt metal.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: FREEPORT-MCMORAN CORPORATIONInventors: Nitin Goel, Ari Gabriel Partanen, Wayne W. Hazen, Phil Rooke
-
Publication number: 20140262817Abstract: Various embodiments provide a method comprising leaching a cobalt bearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, and forwarding the solids to a second leaching operation.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: FREEPORT-MCMORAN CORPORATIONInventors: Nitin Goel, Ari Gabriel Partanen, Wayne W. Hazen, Phil Rooke
-
Patent number: 8828353Abstract: 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.Type: GrantFiled: January 8, 2013Date of Patent: September 9, 2014Assignee: Freeport Minerals CorporationInventors: Barbara J. Savage, David G. Meadows, Wayne W. Hazen
-
Patent number: 8506673Abstract: The present invention relates generally to a process for removing dissolved or colloidal silica from a pregnant leach solution (“PLS”). More particularly, an exemplary embodiment of the present invention relates to a, process which mixes PLS with an acid source, preferably lean electrolyte, to induce formation of colloidal silica that can then be collected and removed. Additionally, in an exemplary embodiment of the present invention, at least one silica seeding agent is added to induce formation of colloidal silica, at least one flocculant is added to induce aggregation of the colloidal silica, and a solid-liquid separation process is utilized to remove advantageous amounts or substantially all of the colloidal silica, thereby providing relief from supersaturation of dissolved silica in the metal recovery processes.Type: GrantFiled: January 30, 2012Date of Patent: August 13, 2013Assignee: Freeport-McMoran CorporationInventors: James D Gillaspie, David R Baughman, Dennis D Gertenbach, Wayne W Hazen, George Owusu, John C Wilmot
-
Publication number: 20130152741Abstract: 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.Type: ApplicationFiled: December 20, 2011Publication date: June 20, 2013Applicant: FREEPORT-MCMORAN CORPORATIONInventors: Jason M. Morgan, Barbara J. Savage, David G. Meadows, Wayne W. Hazen
-
Patent number: 8420048Abstract: 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.Type: GrantFiled: December 20, 2011Date of Patent: April 16, 2013Assignee: Freeport-McMoran CorporationInventors: Anand Raman, Jason M. Morgan, Barbara J Savage, David G Meadows, Wayne W Hazen
-
Patent number: 8372361Abstract: 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.Type: GrantFiled: November 22, 2011Date of Patent: February 12, 2013Assignee: Freeport-McMoran CorporationInventors: Barbara J. Savage, David G. Meadows, Wayne W. Hazen
-
Patent number: 8372360Abstract: 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.Type: GrantFiled: July 21, 2011Date of Patent: February 12, 2013Assignee: Freeport-McMoran CorporationInventors: Barbara J. Savage, David G. Meadows, Wayne W. Hazen
-
Publication number: 20120125160Abstract: The present invention relates generally to a process for removing dissolved or colloidal silica from a pregnant leach solution (“PLS”). More particularly, an exemplary embodiment of the present invention relates to a, process which mixes PLS with an acid source, preferably lean electrolyte, to induce formation of colloidal silica that can then be collected and removed. Additionally, in an exemplary embodiment of the present invention, at least one silica seeding agent is added to induce formation of colloidal silica, at least one flocculant is added to induce aggregation of the colloidal silica, and a solid-liquid separation process is utilized to remove advantageous amounts or substantially all of the colloidal silica, thereby providing relief from supersaturation of dissolved silica in the metal recovery processes.Type: ApplicationFiled: January 30, 2012Publication date: May 24, 2012Applicant: FREEPORT-MCMORAN CORPORATIONInventors: James D Gillaspie, David R. Baughman, Dennis D. Gertenbach, Wayne W. Hazen, George Owusu, John C Wilmot
-
Publication number: 20120060651Abstract: 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.Type: ApplicationFiled: November 22, 2011Publication date: March 15, 2012Applicant: FREEPORT-MCMORAN CORPORATIONInventors: Barbara J. Savage, David G. Meadows, Wayne W. Hazen
-
Patent number: 8114365Abstract: The present invention relates generally to a process for removing dissolved or colloidal silica from a pregnant leach solution (“PLS”). More particularly, an exemplary embodiment of the present invention relates to a process which mixes PLS with an acid source, preferably lean electrolyte, to induce formation of colloidal silica that can then be collected and removed. Additionally, in an exemplary embodiment of the present invention, at least one silica seeding agent is added to induce formation of colloidal silica, at least one flocculant is added to induce aggregation of the colloidal silica, and a solid-liquid separation process is utilized to remove advantageous amounts or substantially all of the colloidal silica, thereby providing relief from supersaturation of dissolved silica in the metal recovery processes.Type: GrantFiled: March 5, 2010Date of Patent: February 14, 2012Assignee: Freepoint-McMoran CorporationInventors: James D. Gillaspie, David R. Baughman, Dennis D. Gertenbach, Wayne W. Hazen, George Owusu, John C. Wilmot
-
Publication number: 20110277593Abstract: 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.Type: ApplicationFiled: July 21, 2011Publication date: November 17, 2011Applicant: FREEPORT-MCMORAN CORPORATIONInventors: Barbara J. Savage, David G. Meadows, Wayne W. Hazen