The application of citric acid solutions for selective removal of zinc from steelmaking dust
Steelmaking dust is one of the wastes which are produced by ironworks. This kind of waste is a byproduct produced mainly in electric arc furnace. Zinc content in dust is different and depends on the charge processed in the furnace. The basic technology used for recycling steelmaking dust is Waelz pr...
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University of Belgrade, Technical Faculty, Bor
2021-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100012G.pdf |
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| author | Gargul K. Handzlik P. Palimąka P. Pawlik A. |
| author_facet | Gargul K. Handzlik P. Palimąka P. Pawlik A. |
| author_sort | Gargul K. |
| collection | DOAJ |
| description | Steelmaking dust is one of the wastes which are produced by ironworks. This kind of waste is a byproduct produced mainly in electric arc furnace. Zinc content in dust is different and depends on the charge processed in the furnace. The basic technology used for recycling steelmaking dust is Waelz process, however, it requires a large amount of reducer and generates a lot of waste which needs to be stored. First stage in this study was to analyze if steelmaking dust was safe to be exposed to atmospheric conditions. To verify this, the dust was subjected to two kinds of standard leaching tests, TCLP and EN-12457-2. The amount of extracted elements was considerable and that was why steelmaking dust should be treated as dangerous waste. Leaching in citric acid solutions was divided in four series. The first one was set to determine the time and temperature for most selective zinc leaching. Next series optimized three leaching parameters which were: citric acid concentration, liquid to solid phase ratio (l/s), and the stirring speed. Performed experiments showed the optimal conditions for selective leaching: temperature of 50°C, leaching time of 60 minutes, citric acid concentration of 0.5 mol/dm3, l/s ratio of 10, and stirring speed of 250 rpm. |
| format | Article |
| id | doaj-art-4c87ae6977cd4208a0526d2c0ad57c49 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-4c87ae6977cd4208a0526d2c0ad57c492025-02-02T10:14:35ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752021-01-0157216317310.2298/JMMB200630012G1450-53392100012GThe application of citric acid solutions for selective removal of zinc from steelmaking dustGargul K.0Handzlik P.1Palimąka P.2Pawlik A.3AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Kraków, PolandAGH University of Science and Technology, Faculty of Non-Ferrous Metals, Kraków, PolandAGH University of Science and Technology, Faculty of Non-Ferrous Metals, Kraków, PolandAGH University of Science and Technology, Faculty of Non-Ferrous Metals, Kraków, PolandSteelmaking dust is one of the wastes which are produced by ironworks. This kind of waste is a byproduct produced mainly in electric arc furnace. Zinc content in dust is different and depends on the charge processed in the furnace. The basic technology used for recycling steelmaking dust is Waelz process, however, it requires a large amount of reducer and generates a lot of waste which needs to be stored. First stage in this study was to analyze if steelmaking dust was safe to be exposed to atmospheric conditions. To verify this, the dust was subjected to two kinds of standard leaching tests, TCLP and EN-12457-2. The amount of extracted elements was considerable and that was why steelmaking dust should be treated as dangerous waste. Leaching in citric acid solutions was divided in four series. The first one was set to determine the time and temperature for most selective zinc leaching. Next series optimized three leaching parameters which were: citric acid concentration, liquid to solid phase ratio (l/s), and the stirring speed. Performed experiments showed the optimal conditions for selective leaching: temperature of 50°C, leaching time of 60 minutes, citric acid concentration of 0.5 mol/dm3, l/s ratio of 10, and stirring speed of 250 rpm.http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100012G.pdfsteelmaking dustcitric acidzinc recoveryleaching |
| spellingShingle | Gargul K. Handzlik P. Palimąka P. Pawlik A. The application of citric acid solutions for selective removal of zinc from steelmaking dust Journal of Mining and Metallurgy. Section B: Metallurgy steelmaking dust citric acid zinc recovery leaching |
| title | The application of citric acid solutions for selective removal of zinc from steelmaking dust |
| title_full | The application of citric acid solutions for selective removal of zinc from steelmaking dust |
| title_fullStr | The application of citric acid solutions for selective removal of zinc from steelmaking dust |
| title_full_unstemmed | The application of citric acid solutions for selective removal of zinc from steelmaking dust |
| title_short | The application of citric acid solutions for selective removal of zinc from steelmaking dust |
| title_sort | application of citric acid solutions for selective removal of zinc from steelmaking dust |
| topic | steelmaking dust citric acid zinc recovery leaching |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100012G.pdf |
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