East Sahuarita, AZ, United States
East Sahuarita, AZ, United States

Time filter

Source Type

Patent
Freeport McMoRan Inc. | Date: 2016-09-23

A method of designing an underground excavation may involve the steps of: Developing a plurality of input parameters for the underground excavation; performing a first design iteration to determine an initial ground support system design; evaluating a kinematic stability of the initial ground support system design; determining whether the kinematic stability meets a predetermined factor of safety; and reiterating the initial ground support system design until the kinematic stability meets the predetermined factor of safety.


Patent
Freeport Mcmoran Corporation | Date: 2013-01-11

An electrode for use in producing copper in either a conventional electrowinning cell or the direct electrowinning cell is provided. The electrode includes a hanger bar and an electrode body coupled with the hanger bar. The electrode body includes at least one conductor rod having a core and an outer layer surrounding the core and a substrate coupled with the conductor rod.


Patent
Freeport Mcmoran Corporation | Date: 2013-12-13

Systems and methods for improving leach solution drainage in a stockpile leach operation are provided. In various embodiments, methods are provided comprising placement of a drainage measure or a system of drainage measures in a leach stockpile to improve leach solution flow through the stockpile. A system for recovery of metal values from a leach stockpile comprising a leach stockpile, a leach solution, a leach solution delivery system, a leach solution drainage system, and a leach solution recovery system are also provided.


Patent
Freeport Mcmoran Corporation | Date: 2013-03-14

Systems and methods for basic leaching are provided. In various embodiments, a method is provided comprising leaching a slurry comprising a copper bearing material and an ammonia leach medium, adding copper powder to the slurry, separating the slurry into a pregnant leach solution and solids, and performing a solvent extraction on the pregnant leach solution to produce an loaded aqueous stream.


Patent
Freeport Mcmoran Corporation | Date: 2013-03-14

Systems and methods for basic leaching are provided. In various embodiments, a method is provided comprising leaching a slurry comprising a copper bearing material and a leach medium comprising ammonia and ammonium carbonate, adding copper powder to the slurry, separating the slurry into a pregnant leach solution and solids, and performing a solvent extraction on the pregnant leach solution to produce an loaded aqueous stream.


Patent
Freeport Mcmoran Corporation | Date: 2013-03-13

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.


Patent
Freeport Mcmoran Corporation | Date: 2013-03-13

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.


Patent
Freeport Mcmoran Corporation | Date: 2013-03-13

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.


Patent
Freeport Mcmoran Corporation | Date: 2013-03-13

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.


Patent
Freeport Mcmoran Corporation | Date: 2013-06-19

Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated carbon. The methods can also include heating a basic aqueous elution solution and eluting the rhenium from the activated carbon with the heated elution solution.

Loading Freeport McMoRan Inc. collaborators
Loading Freeport McMoRan Inc. collaborators