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
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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.
Claims67
A method of recovering at least one base metal ion from at least one base metal sulfide in a material, the method comprising:
- contacting the material with an acidic solution comprising a reagent having a thiocarbonyl functional group, wherein the concentration of the reagent is in the range of 0.001 mM to 100 mM, to produce a pregnant solution comprising the at least one base metal ion;
- and
- recovering at least one base metal ion from the pregnant solution.
Dependencies are inferred from the claim text.