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.

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.

Disclosed is a process for the selective removal of copper compounds, and other impurities with respect to molybdenum and rhenium, from concentrates of molybdenite (MoS.sub.2) with a copper content that is higher than 0.5% in dry weight.

The present invention relates to a functional copper sulfide composition and a functional fiber prepared therefrom, and more particularly, a functional copper sulfide composition comprising a copper salt, a metal salt, a reducing agent, a sulfur compound, a catalyst, a poly amine, an alkali compound and a pH adjusting agent; and a functional fiber prepared by treating the composition with a fiber.

The present invention relates to a functional copper sulfide composition and a functional fiber prepared therefrom, and more particularly, a functional copper sulfide composition comprising a copper salt, a metal salt, a reducing agent, a sulfur compound, a catalyst, a poly amine, an alkali compound and a pH adjusting agent; and a functional fiber prepared by treating the composition with a fiber.

Copper sulfate which includes a Fe with a concentration of 0.08 ppm by mass or less.

Copper sulfate which includes a Fe with a concentration of 0.08 ppm by mass or less.

A copper microparticle with antibacterial and/or biocidal activity, wherein each microparticle has a regular, crystalline and microstructured composition that comprises 5 different copper compounds: Antlerite Cu.sub.3.sup.+2 (SO.sub.4) (OH).sub.4, Brochantite Cu.sub.4.sup.+2SO.sub.4 (OH).sub.6, Chalcantite Cu.sup.+2SO.sub.4.5H.sub.2O, Natrochalcite NaCu.sub.2.sup.+2 (SO.sub.4).sub.2OH.H.sub.2O and Hydrated copper sulfate hydroxide Cu.sub.3 (SO.sub.4).sub.2 (OH).sub.2.4H.sub.2O/2CuSO.sub.4.Cu (OH).sub.2, with the microparticle having a size of between 5 and 50 m. A process for preparing copper microparticles with antibacterial and/or biocidal activity. A concentrated polymeric composition (masterbatch) with antibacterial and/or biocidal activity that is incorporated during the extrusion process to molten polymers for forming rigid or flexible products such as fibers, filaments, and sheets. A use of a copper microparticle with antibacterial and/or biocidal activity. A use of a concentrated polymeric composition (masterbatch) with antibacterial and/or biocidal activity.

A copper microparticle with antibacterial and/or biocidal activity, wherein each microparticle has a regular, crystalline and microstructured composition that comprises 5 different copper compounds: Antlerite Cu.sub.3.sup.+2 (SO.sub.4) (OH).sub.4, Brochantite Cu.sub.4.sup.+2SO.sub.4 (OH).sub.6, Chalcantite Cu.sup.+2SO.sub.4.5H.sub.2O, Natrochalcite NaCu.sub.2.sup.+2 (SO.sub.4).sub.2OH.H.sub.2O and Hydrated copper sulfate hydroxide Cu.sub.3 (SO.sub.4).sub.2 (OH).sub.2.4H.sub.2O/2CuSO.sub.4.Cu (OH).sub.2, with the microparticle having a size of between 5 and 50 m. A process for preparing copper microparticles with antibacterial and/or biocidal activity. A concentrated polymeric composition (masterbatch) with antibacterial and/or biocidal activity that is incorporated during the extrusion process to molten polymers for forming rigid or flexible products such as fibers, filaments, and sheets. A use of a copper microparticle with antibacterial and/or biocidal activity. A use of a concentrated polymeric composition (masterbatch) with antibacterial and/or biocidal activity.

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.