Thermodynamics Evaluation and Verification of High-Sulfur Copper Slag Composite Agglomerate in Oxidation-Roasting-Separation-Leaching Process
To solve situation of high-sulfur copper slag utilization, an innovative technology was proposed for oxidation roasting with composite agglomerates. The oxidation-roasting process was studied by factage7.3 software. The thermodynamics were calculated about sulfur removal, sulfur adsorption and decom...
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MDPI AG
2022-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/1/42 |
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| author | Kai Zhao Xinghua Zhang Wei Zhao Hongwei Guo Qiaorong Zhang Changliang Zhen |
| author_facet | Kai Zhao Xinghua Zhang Wei Zhao Hongwei Guo Qiaorong Zhang Changliang Zhen |
| author_sort | Kai Zhao |
| collection | DOAJ |
| description | To solve situation of high-sulfur copper slag utilization, an innovative technology was proposed for oxidation roasting with composite agglomerates. The oxidation-roasting process was studied by factage7.3 software. The thermodynamics were calculated about sulfur removal, sulfur adsorption and decomposition. The adsorption of sulfur oxides and microstructure evolution were analyzed via an oxidation roasting experiment and SEM-EDS. The results show that the matte and As<i><sub>x</sub></i>S<i><sub>y</sub></i> in the matrix could be effectively removed via oxidation roasting in an oxygen atmosphere; the sulfoxide was adsorbed to produce CaSO<sub>4</sub>. The Fe<sub>2</sub>SiO<sub>4</sub> decomposition could be realized at suitable roasting temperature and in an oxygen atmosphere. This is helpful for the magnetic separation of iron and silicon. The thermodynamic and experimental results were preliminarily confirmed to be available in the innovative process. |
| first_indexed | 2024-03-11T09:55:41Z |
| format | Article |
| id | doaj.art-1ee65afddf154c05a9f2e6849e0bcd58 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:55:41Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-1ee65afddf154c05a9f2e6849e0bcd582023-11-16T15:46:10ZengMDPI AGMaterials1996-19442022-12-011614210.3390/ma16010042Thermodynamics Evaluation and Verification of High-Sulfur Copper Slag Composite Agglomerate in Oxidation-Roasting-Separation-Leaching ProcessKai Zhao0Xinghua Zhang1Wei Zhao2Hongwei Guo3Qiaorong Zhang4Changliang Zhen5School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063002, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaSchool of Iron and Steel, Soochow University, Suzhou 215006, ChinaSchool of Iron and Steel, Soochow University, Suzhou 215006, ChinaSchool of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063002, ChinaSchool of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063002, ChinaTo solve situation of high-sulfur copper slag utilization, an innovative technology was proposed for oxidation roasting with composite agglomerates. The oxidation-roasting process was studied by factage7.3 software. The thermodynamics were calculated about sulfur removal, sulfur adsorption and decomposition. The adsorption of sulfur oxides and microstructure evolution were analyzed via an oxidation roasting experiment and SEM-EDS. The results show that the matte and As<i><sub>x</sub></i>S<i><sub>y</sub></i> in the matrix could be effectively removed via oxidation roasting in an oxygen atmosphere; the sulfoxide was adsorbed to produce CaSO<sub>4</sub>. The Fe<sub>2</sub>SiO<sub>4</sub> decomposition could be realized at suitable roasting temperature and in an oxygen atmosphere. This is helpful for the magnetic separation of iron and silicon. The thermodynamic and experimental results were preliminarily confirmed to be available in the innovative process.https://www.mdpi.com/1996-1944/16/1/42copper slagoxidation roastingcomposite agglomeratesthermodynamicsdesulfurization |
| spellingShingle | Kai Zhao Xinghua Zhang Wei Zhao Hongwei Guo Qiaorong Zhang Changliang Zhen Thermodynamics Evaluation and Verification of High-Sulfur Copper Slag Composite Agglomerate in Oxidation-Roasting-Separation-Leaching Process Materials copper slag oxidation roasting composite agglomerates thermodynamics desulfurization |
| title | Thermodynamics Evaluation and Verification of High-Sulfur Copper Slag Composite Agglomerate in Oxidation-Roasting-Separation-Leaching Process |
| title_full | Thermodynamics Evaluation and Verification of High-Sulfur Copper Slag Composite Agglomerate in Oxidation-Roasting-Separation-Leaching Process |
| title_fullStr | Thermodynamics Evaluation and Verification of High-Sulfur Copper Slag Composite Agglomerate in Oxidation-Roasting-Separation-Leaching Process |
| title_full_unstemmed | Thermodynamics Evaluation and Verification of High-Sulfur Copper Slag Composite Agglomerate in Oxidation-Roasting-Separation-Leaching Process |
| title_short | Thermodynamics Evaluation and Verification of High-Sulfur Copper Slag Composite Agglomerate in Oxidation-Roasting-Separation-Leaching Process |
| title_sort | thermodynamics evaluation and verification of high sulfur copper slag composite agglomerate in oxidation roasting separation leaching process |
| topic | copper slag oxidation roasting composite agglomerates thermodynamics desulfurization |
| url | https://www.mdpi.com/1996-1944/16/1/42 |
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