Desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing
The desulfurization process of lead and zinc slag is an important smelting process to obtain lead and zinc. The aim of this paper is to study the desulfurization process of high lead and zinc sulfide containing slag with oxygen blowing. The predominance area diagrams of the Pb-Zn-Fe-S-O system (Pb/(...
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University of Belgrade, Technical Faculty, Bor
2019-01-01
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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/1450-5339/2019/1450-53391900026Y.pdf |
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| author | Ouyang K. Dou Z.-H. Zhang T.-A. Liu Y. Niu L.-P. |
| author_facet | Ouyang K. Dou Z.-H. Zhang T.-A. Liu Y. Niu L.-P. |
| author_sort | Ouyang K. |
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| description | The desulfurization process of lead and zinc slag is an important smelting process to obtain lead and zinc. The aim of this paper is to study the desulfurization process of high lead and zinc sulfide containing slag with oxygen blowing. The predominance area diagrams of the Pb-Zn-Fe-S-O system (Pb/(Fe+Pb+Zn)=0.176, Zn/(Fe+Pb+Zn)=0.56) at various temperature were thermodynamically constructed. The physical properties, the chemical composition and the phase transformation of the desulfurization slag were investigated. The thermodynamic results indicated that lead, zinc, and iron can be oxidized to form high lead and zinc slag. The experimental results illustrated that the sulfur content in the oxidation slag can be reduced to less than 1% as temperature increased up to 1573 K. The XRD analysis of as-quenched slag shows the PbS and ZnS phase decreased, while zincite and spinel phase (ZnxFe3-xO4+y) emerged and increased as the reaction time increased. The desulfurization process of molten slag were considered to be the first-order reaction and the apparent activation energy was estimated to be 44.46 kJ/mol. Under the experimental conditions, the mass transfer in the gas and liquid phase was likely to be the restrictive step. |
| format | Article |
| id | doaj-art-dd219585a20742bca16dab1fa6d21929 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-dd219585a20742bca16dab1fa6d219292025-02-02T16:59:58ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752019-01-0155218719610.2298/JMMB190121026Y1450-53391900026YDesulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowingOuyang K.0Dou Z.-H.1Zhang T.-A.2Liu Y.3Niu L.-P.4Northeastern University, School of Metallurgy, Shenyang, ChinaNortheastern University, School of Metallurgy, Shenyang, ChinaNortheastern University, School of Metallurgy, Shenyang, ChinaNortheastern University, School of Metallurgy, Shenyang, ChinaNortheastern University, School of Metallurgy, Shenyang, ChinaThe desulfurization process of lead and zinc slag is an important smelting process to obtain lead and zinc. The aim of this paper is to study the desulfurization process of high lead and zinc sulfide containing slag with oxygen blowing. The predominance area diagrams of the Pb-Zn-Fe-S-O system (Pb/(Fe+Pb+Zn)=0.176, Zn/(Fe+Pb+Zn)=0.56) at various temperature were thermodynamically constructed. The physical properties, the chemical composition and the phase transformation of the desulfurization slag were investigated. The thermodynamic results indicated that lead, zinc, and iron can be oxidized to form high lead and zinc slag. The experimental results illustrated that the sulfur content in the oxidation slag can be reduced to less than 1% as temperature increased up to 1573 K. The XRD analysis of as-quenched slag shows the PbS and ZnS phase decreased, while zincite and spinel phase (ZnxFe3-xO4+y) emerged and increased as the reaction time increased. The desulfurization process of molten slag were considered to be the first-order reaction and the apparent activation energy was estimated to be 44.46 kJ/mol. Under the experimental conditions, the mass transfer in the gas and liquid phase was likely to be the restrictive step.http://www.doiserbia.nb.rs/img/doi/1450-5339/2019/1450-53391900026Y.pdflead and zinc mixed orehigh lead-zinc sulfur slagdesulfurizationkinetics |
| spellingShingle | Ouyang K. Dou Z.-H. Zhang T.-A. Liu Y. Niu L.-P. Desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing Journal of Mining and Metallurgy. Section B: Metallurgy lead and zinc mixed ore high lead-zinc sulfur slag desulfurization kinetics |
| title | Desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing |
| title_full | Desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing |
| title_fullStr | Desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing |
| title_full_unstemmed | Desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing |
| title_short | Desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing |
| title_sort | desulfurization kinetics of high lead and zinc sulfide containing slag with oxygen blowing |
| topic | lead and zinc mixed ore high lead-zinc sulfur slag desulfurization kinetics |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2019/1450-53391900026Y.pdf |
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