Copper Sulfation from Enargite Roasting Using Coal and Fayalite Slag Mixture
In this work, the roasting of an enargite mix was carried out in oxidative conditions. The temperature range of the study was 773–973 K. The mixture had a 4:6:6 molar ratio of enargite, magnetite and coal, respectively. The roasting was made in an open atmosphere. The time was 1 h for each isotherma...
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| Format: | Article |
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MDPI AG
2023-11-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/13/12/1489 |
| _version_ | 1797379983237185536 |
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| author | Miguel Véliz Alvaro Aracena Oscar Jerez Manuel Pérez-Tello Eduardo Balladares |
| author_facet | Miguel Véliz Alvaro Aracena Oscar Jerez Manuel Pérez-Tello Eduardo Balladares |
| author_sort | Miguel Véliz |
| collection | DOAJ |
| description | In this work, the roasting of an enargite mix was carried out in oxidative conditions. The temperature range of the study was 773–973 K. The mixture had a 4:6:6 molar ratio of enargite, magnetite and coal, respectively. The roasting was made in an open atmosphere. The time was 1 h for each isothermal test. The effect of temperature and weight loss were studied. The results indicate that the temperature affects the products. At 773–873 K, the copper phases were sulfates. When the temperature was increased to 973 K, all the present phases were oxidized, and no arsenic phase was encountered in the XRDs. Therefore, this process is an excellent alternative for roasting copper concentrates with enargite, removing arsenic in the gas phase and generating a calcine that could then go to lixiviation to finally recover the copper through electrowinning. |
| first_indexed | 2024-03-08T20:30:54Z |
| format | Article |
| id | doaj.art-68564f42a4a746bcbc1c2e3998f05327 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-08T20:30:54Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-68564f42a4a746bcbc1c2e3998f053272023-12-22T14:26:31ZengMDPI AGMinerals2075-163X2023-11-011312148910.3390/min13121489Copper Sulfation from Enargite Roasting Using Coal and Fayalite Slag MixtureMiguel Véliz0Alvaro Aracena1Oscar Jerez2Manuel Pérez-Tello3Eduardo Balladares4Escuela de Ingeniería Química, Pontificia Universidad Católica de Valparaíso, Valparaíso 2362854, ChileEscuela de Ingeniería Química, Pontificia Universidad Católica de Valparaíso, Valparaíso 2362854, ChileInstituto de Geología Económica Aplicada, Universidad de Concepción, Concepción 4070386, ChileDepartamento de Ingeniería Química y Metalurgia, Universidad de Sonora, Hermosillo 83000, MexicoDepartamento de Ingeniería Metalúrgica, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070386, ChileIn this work, the roasting of an enargite mix was carried out in oxidative conditions. The temperature range of the study was 773–973 K. The mixture had a 4:6:6 molar ratio of enargite, magnetite and coal, respectively. The roasting was made in an open atmosphere. The time was 1 h for each isothermal test. The effect of temperature and weight loss were studied. The results indicate that the temperature affects the products. At 773–873 K, the copper phases were sulfates. When the temperature was increased to 973 K, all the present phases were oxidized, and no arsenic phase was encountered in the XRDs. Therefore, this process is an excellent alternative for roasting copper concentrates with enargite, removing arsenic in the gas phase and generating a calcine that could then go to lixiviation to finally recover the copper through electrowinning.https://www.mdpi.com/2075-163X/13/12/1489enargiteroastingsulfateslagcoppercapture |
| spellingShingle | Miguel Véliz Alvaro Aracena Oscar Jerez Manuel Pérez-Tello Eduardo Balladares Copper Sulfation from Enargite Roasting Using Coal and Fayalite Slag Mixture Minerals enargite roasting sulfate slag copper capture |
| title | Copper Sulfation from Enargite Roasting Using Coal and Fayalite Slag Mixture |
| title_full | Copper Sulfation from Enargite Roasting Using Coal and Fayalite Slag Mixture |
| title_fullStr | Copper Sulfation from Enargite Roasting Using Coal and Fayalite Slag Mixture |
| title_full_unstemmed | Copper Sulfation from Enargite Roasting Using Coal and Fayalite Slag Mixture |
| title_short | Copper Sulfation from Enargite Roasting Using Coal and Fayalite Slag Mixture |
| title_sort | copper sulfation from enargite roasting using coal and fayalite slag mixture |
| topic | enargite roasting sulfate slag copper capture |
| url | https://www.mdpi.com/2075-163X/13/12/1489 |
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