Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry
This article presents the results of a study on metallurgical slag reduction using biomass such as Spent Coffee Grounds (SCGs). The proposed solution is a new aspect of searching for alternatives to standard reducers used in pyrometallurgical processes of metal production. Its gasification yields si...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/5/2415 |
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| author | Tomasz Matula Jerzy Labaj Krzysztof Nowacki Leszek Blacha Lukasz Kortyka Lukasz Mycka Piotr Madej Lukasz Jaworek Tomasz Wojtal |
| author_facet | Tomasz Matula Jerzy Labaj Krzysztof Nowacki Leszek Blacha Lukasz Kortyka Lukasz Mycka Piotr Madej Lukasz Jaworek Tomasz Wojtal |
| author_sort | Tomasz Matula |
| collection | DOAJ |
| description | This article presents the results of a study on metallurgical slag reduction using biomass such as Spent Coffee Grounds (SCGs). The proposed solution is a new aspect of searching for alternatives to standard reducers used in pyrometallurgical processes of metal production. Its gasification yields significant amounts of hydrocarbons, which are excellent reducing agents in such processes. The research results of copper slag reduction with the use of SCG biomass indicate this process is characterised by lower carbon dioxide emissions compared with the process using solid fuels such as coke and coke breeze. The addition of SCG as the reducer ensures the decrease in copper content in the slag to 0.32 wt.%, which corresponds to the increase of so-called relative decopperisation degree even up to 96.9%. As the decopperisation degree of slag increases, significantly more intense reduction in lead oxides during the reduction process is observed. The smallest lead content in waste slag of 0.91 wt.% was obtained for the slag reduction process with 7.56 wt.% of SCG as the reducer and the process duration of 1.5 h. |
| first_indexed | 2024-03-11T07:25:29Z |
| format | Article |
| id | doaj.art-59842544da104da2b9b987c75895924f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T07:25:29Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-59842544da104da2b9b987c75895924f2023-11-17T07:38:21ZengMDPI AGEnergies1996-10732023-03-01165241510.3390/en16052415Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper IndustryTomasz Matula0Jerzy Labaj1Krzysztof Nowacki2Leszek Blacha3Lukasz Kortyka4Lukasz Mycka5Piotr Madej6Lukasz Jaworek7Tomasz Wojtal8Department of Metallurgy and Recycling, Faculty of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, PolandDepartment of Production Engineering, Faculty of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, PolandDepartment of Production Engineering, Faculty of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, PolandDepartment of Metallurgy and Recycling, Faculty of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, PolandLukasiewicz Research Network—Institute of Non-Ferrous Metals, Sowinskiego 5, 44-100 Gliwice, PolandLukasiewicz Research Network—Institute of Non-Ferrous Metals, Sowinskiego 5, 44-100 Gliwice, PolandLukasiewicz Research Network—Institute of Non-Ferrous Metals, Sowinskiego 5, 44-100 Gliwice, PolandLukasiewicz Research Network—Institute of Non-Ferrous Metals, Sowinskiego 5, 44-100 Gliwice, PolandDepartment of Metallurgy and Recycling, Faculty of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, PolandThis article presents the results of a study on metallurgical slag reduction using biomass such as Spent Coffee Grounds (SCGs). The proposed solution is a new aspect of searching for alternatives to standard reducers used in pyrometallurgical processes of metal production. Its gasification yields significant amounts of hydrocarbons, which are excellent reducing agents in such processes. The research results of copper slag reduction with the use of SCG biomass indicate this process is characterised by lower carbon dioxide emissions compared with the process using solid fuels such as coke and coke breeze. The addition of SCG as the reducer ensures the decrease in copper content in the slag to 0.32 wt.%, which corresponds to the increase of so-called relative decopperisation degree even up to 96.9%. As the decopperisation degree of slag increases, significantly more intense reduction in lead oxides during the reduction process is observed. The smallest lead content in waste slag of 0.91 wt.% was obtained for the slag reduction process with 7.56 wt.% of SCG as the reducer and the process duration of 1.5 h.https://www.mdpi.com/1996-1073/16/5/2415reductionspent coffee groundsmetallurgical slag |
| spellingShingle | Tomasz Matula Jerzy Labaj Krzysztof Nowacki Leszek Blacha Lukasz Kortyka Lukasz Mycka Piotr Madej Lukasz Jaworek Tomasz Wojtal Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry Energies reduction spent coffee grounds metallurgical slag |
| title | Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry |
| title_full | Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry |
| title_fullStr | Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry |
| title_full_unstemmed | Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry |
| title_short | Application of Spent Coffee Grounds (SCGs) as a Fuel and Alternative Reducer of Slags from the Copper Industry |
| title_sort | application of spent coffee grounds scgs as a fuel and alternative reducer of slags from the copper industry |
| topic | reduction spent coffee grounds metallurgical slag |
| url | https://www.mdpi.com/1996-1073/16/5/2415 |
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