CL2018001729A1 - Procedure for the extraction of copper from copper sulfide concentrate containing arsenic. - Google Patents
Procedure for the extraction of copper from copper sulfide concentrate containing arsenic.Info
- Publication number
- CL2018001729A1 CL2018001729A1 CL2018001729A CL2018001729A CL2018001729A1 CL 2018001729 A1 CL2018001729 A1 CL 2018001729A1 CL 2018001729 A CL2018001729 A CL 2018001729A CL 2018001729 A CL2018001729 A CL 2018001729A CL 2018001729 A1 CL2018001729 A1 CL 2018001729A1
- Authority
- CL
- Chile
- Prior art keywords
- copper
- arsenic
- leaching
- leaching solution
- produce
- Prior art date
Links
- 229910052785 arsenic Inorganic materials 0.000 title abstract 11
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title abstract 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title abstract 9
- 229910052802 copper Inorganic materials 0.000 title abstract 9
- 239000010949 copper Substances 0.000 title abstract 9
- 239000012141 concentrate Substances 0.000 title abstract 3
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 title abstract 2
- 238000000605 extraction Methods 0.000 title abstract 2
- 238000002386 leaching Methods 0.000 abstract 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 4
- 230000001590 oxidative effect Effects 0.000 abstract 4
- 239000007787 solid Substances 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910000358 iron sulfate Inorganic materials 0.000 abstract 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000001556 precipitation Methods 0.000 abstract 2
- 238000007670 refining Methods 0.000 abstract 2
- 239000002002 slurry Substances 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Se proporciona un proceso para la extracción de cobre desde un concentrado de sulfuro de cobre que contiene arsénico. El proceso incluye lixiviación oxidante atmosférica de una suspensión de alimentación que incluye el concentrado de sulfuro de cobre que contiene arsénico y una disolución de lixiviación ácida que contiene sulfato de hierro en presencia de oxígeno, para producir una lechada de lixiviación que incluye cobre y arsénico disueltos en la solución de lixiviación. Después de disolver el cobre y arsénico, y antes de precipitar el arsénico disuelto durante el lixiviación oxidante, los sólidos de preprecipitación se recuperan de la lechada de lixiviación para producir los sólidos previos a la precipitación y una solución resultante de lixiviación cargada que incluye el cobre y el arsénico. La semilla que contiene escorodita se introduce en la solución de lixiviación cargada que incluye el cobre y arsénico para inducir la precipitación del arsénico disuelto durante la lixiviación oxidante, como escorodita. Los sólidos son recuperados de la solución de lixiviación cargada para producir los sólidos, incluyendo la escorodita y una solución de lixiviación cargada reducida en arsénico, que incluye cobre. La solución de lixiviación cargada con arsénico que incluye el cobre es sometida a extracción por solvente para recuperar cobre y producir así un refinado que incluye ácido sulfúrico y sulfato de hierro, y al menos una parte del refinado que incluye el ácido sulfúrico y el sulfato de hierro es reciclada a la lixiviación oxidante.A process for copper extraction from a copper sulfide concentrate containing arsenic is provided. The process includes atmospheric oxidizing leaching of a feed suspension that includes arsenic-containing copper sulphide concentrate and an acidic leaching solution containing iron sulfate in the presence of oxygen, to produce a leaching slurry that includes dissolved copper and arsenic. in the leaching solution. After dissolving the copper and arsenic, and before precipitating the dissolved arsenic during oxidizing leaching, the preprecipitation solids are recovered from the leaching slurry to produce the solids prior to precipitation and a resulting leaching solution that includes the copper and arsenic. The seed containing scorcorite is introduced into the charged leaching solution that includes copper and arsenic to induce precipitation of dissolved arsenic during oxidative leaching, such as scorcorite. The solids are recovered from the charged leaching solution to produce the solids, including the scorcorite and a reduced arsenic leaching solution, which includes copper. The arsenic-loaded leaching solution that includes copper is subjected to solvent extraction to recover copper and thus produce a refining that includes sulfuric acid and iron sulfate, and at least a part of the refining that includes sulfuric acid and sulfate. Iron is recycled to oxidizing leaching.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2974905A CA2974905A1 (en) | 2016-07-28 | 2017-07-27 | Process for extraction of copper from arsenical copper sulfide concentrate |
| US15/997,329 US10323296B2 (en) | 2016-07-28 | 2018-06-04 | Process for extraction of copper from arsenical copper sulfide concentrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CL2018001729A1 true CL2018001729A1 (en) | 2018-11-23 |
Family
ID=65529027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CL2018001729A CL2018001729A1 (en) | 2017-07-27 | 2018-06-22 | Procedure for the extraction of copper from copper sulfide concentrate containing arsenic. |
Country Status (1)
| Country | Link |
|---|---|
| CL (1) | CL2018001729A1 (en) |
-
2018
- 2018-06-22 CL CL2018001729A patent/CL2018001729A1/en unknown
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