Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-product
Precious metals such as gold (Au) and silver (Ag) are essential to our modern society due to their unique properties, such as high conductivity and physical and chemical resistance. They are teofn concentrated in by-products during the extraction of base metals. In the present work, a chalcopyrite...
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2021-08-01
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| Series: | Dyna |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/dyna/article/view/90284 |
| _version_ | 1797838857300869120 |
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| author | Marleth Roxana Garza Román Francisco Raúl Carrillo Pedroza Nallely Guadalupe Picazo Rodríguez Ma. de Jesus Soria Aguilar Isaías Almaguer Guzmán Josué Chaidez Félix |
| author_facet | Marleth Roxana Garza Román Francisco Raúl Carrillo Pedroza Nallely Guadalupe Picazo Rodríguez Ma. de Jesus Soria Aguilar Isaías Almaguer Guzmán Josué Chaidez Félix |
| author_sort | Marleth Roxana Garza Román |
| collection | DOAJ |
| description |
Precious metals such as gold (Au) and silver (Ag) are essential to our modern society due to their unique properties, such as high conductivity and physical and chemical resistance. They are teofn concentrated in by-products during the extraction of base metals. In the present work, a chalcopyrite leaching residue, constituted mainly of elemental sulfur and jarosites, was subjected to different pretreatments and leached with different leaching media to recover Au and Ag. The solid residue was pretreated by desulfurization,peroxidation,desulfurization+peroxidation and leached with cyanide, cyanide+glycine, and glycine. For comparison, samples without pretreatment were also leached using the same leaching media. Changes in the mineralogical species were followed to explain the effects of pretreatment and leaching medium on the dissolution of Au and Ag. Results indicate that the highest extraction of gold and silver (Au:99.50%, Ag:46.71%) is achieved by using a combined desulfurization+peroxidation pretreatment and cyanide as leaching medium.
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| first_indexed | 2024-04-09T15:47:41Z |
| format | Article |
| id | doaj.art-a61b92baea8c4f368438884c2126c0ed |
| institution | Directory Open Access Journal |
| issn | 0012-7353 2346-2183 |
| language | English |
| last_indexed | 2024-04-09T15:47:41Z |
| publishDate | 2021-08-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Dyna |
| spelling | doaj.art-a61b92baea8c4f368438884c2126c0ed2023-04-26T18:29:52ZengUniversidad Nacional de ColombiaDyna0012-73532346-21832021-08-018821810.15446/dyna.v88n218.90284Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-productMarleth Roxana Garza Román0Francisco Raúl Carrillo Pedroza1Nallely Guadalupe Picazo Rodríguez2Ma. de Jesus Soria Aguilar3Isaías Almaguer Guzmán4Josué Chaidez Félix5Universidad Autónoma de CoahuilaUniversidad Autónoma de CoahuilaUniversidad Autónoma de CoahuilaUniversidad Autónoma de CoahuilaPeñoles, CIDT-SEPSAPeñoles, CIDT-SEPSA Precious metals such as gold (Au) and silver (Ag) are essential to our modern society due to their unique properties, such as high conductivity and physical and chemical resistance. They are teofn concentrated in by-products during the extraction of base metals. In the present work, a chalcopyrite leaching residue, constituted mainly of elemental sulfur and jarosites, was subjected to different pretreatments and leached with different leaching media to recover Au and Ag. The solid residue was pretreated by desulfurization,peroxidation,desulfurization+peroxidation and leached with cyanide, cyanide+glycine, and glycine. For comparison, samples without pretreatment were also leached using the same leaching media. Changes in the mineralogical species were followed to explain the effects of pretreatment and leaching medium on the dissolution of Au and Ag. Results indicate that the highest extraction of gold and silver (Au:99.50%, Ag:46.71%) is achieved by using a combined desulfurization+peroxidation pretreatment and cyanide as leaching medium. https://revistas.unal.edu.co/index.php/dyna/article/view/90284Cyanidationglycineprecious metalschalcopyrite leaching by-product. |
| spellingShingle | Marleth Roxana Garza Román Francisco Raúl Carrillo Pedroza Nallely Guadalupe Picazo Rodríguez Ma. de Jesus Soria Aguilar Isaías Almaguer Guzmán Josué Chaidez Félix Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-product Dyna Cyanidation glycine precious metals chalcopyrite leaching by-product. |
| title | Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-product |
| title_full | Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-product |
| title_fullStr | Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-product |
| title_full_unstemmed | Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-product |
| title_short | Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-product |
| title_sort | effects of pretreatment and leaching medium on the extraction efficiency of au and ag from a chalcopyrite leaching by product |
| topic | Cyanidation glycine precious metals chalcopyrite leaching by-product. |
| url | https://revistas.unal.edu.co/index.php/dyna/article/view/90284 |
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