Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
AssigneeJetti Resources, LLC
InventorsDavid Dixon, Oscar Olvera Olmedo, Edouard Asselin, Ahmad Ghahreman, Zihe Ren
Life of this patent
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Abstract
This application pertains to methods of recovering metals from metal sulfides that involve contacting the metal sulfide with an acidic sulfate solution containing ferric sulfate and a reagent that has a thiocarbonyl functional group, wherein the concentration of reagent in the acidic sulfate solution is sufficient to increase the rate of metal ion extraction relative to an acidic sulfate solution that does not contain the reagent, to produce a pregnant solution containing the metal ions.
Claims39
A method for extracting metal comprising:
- extracting at least one metal from a metal sulfide comprising the step of using formamidine disulfide (FDS) for the extracting, wherein the at least one metal includes copper and the at least one metal sulfide includes chalcopyrite.
A method for extracting metal comprising:
- extracting at least one metal from a metal sulfide comprising the step of using formamidine disulfide (FDS) for the extracting, wherein the at least one metal includes copper and the at least one metal sulfide includes covellite.
A method for extracting metal comprising:
- extracting at least one metal from a metal sulfide comprising the step of using formamidine disulfide (FDS) for the extracting, wherein the at least one metal includes copper and the at least one metal sulfide includes bornite.
A method for extracting metal comprising:
- extracting at least one metal from a metal sulfide comprising the step of using formamidine disulfide (FDS) for the extracting, wherein the at least one metal includes copper and the at least one metal sulfide includes enargite.
A method for extracting metal comprising:
- extracting at least one metal from a metal sulfide comprising the step of using formamidine disulfide (FDS) for the extracting, wherein the at least one metal includes a copper sulfide of the formula CuxSy wherein the x:y ratio is between 1 and 2.
A method for extracting metal comprising:
- extracting at least one metal from a metal sulfide comprising the step of using formamidine disulfide (FDS) for the extracting, wherein the at least one metal includes cadmium and the at least one metal sulfide includes greenockite.
A method for extracting metal comprising:
- extracting at least one metal from a metal sulfide comprising the step of using formamidine disulfide (FDS) for the extracting, wherein the at least one metal includes nickel and the at least one metal sulfide includes pentlandite.
A method for extracting metal comprising:
- extracting at least one metal from a metal sulfide comprising the step of using formamidine disulfide (FDS) for the extracting, wherein the at least one metal includes nickel and the at least one metal sulfide includes violarite.
A method of recovering at least one base metal ion from a base metal sulfide in a material, the method comprising:
- contacting the material with an acidic solution comprising formamidine disulfide (FDS) to produce a pregnant solution comprising the at least one base metal ion;
- and
- recovering the at least one base metal ion from the pregnant solution.
Dependencies are inferred from the claim text.