Kinetics of Pb and Zn leaching from zinc plant residue by sodium hydroxide
In the hydrometallurgical zinc production processes, important amount of hazardous solid extraction residue containing unextractable Zn and Pb is generated. Due to increasing demand of metals and the depletion of high grade natural resources, these types of wastes are gaining great importan...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2015-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2015/1450-53391500012E.pdf |
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| author | Erdem M. Yurten M. |
| author_facet | Erdem M. Yurten M. |
| author_sort | Erdem M. |
| collection | DOAJ |
| description | In the hydrometallurgical zinc production processes, important amount of
hazardous solid extraction residue containing unextractable Zn and Pb is
generated. Due to increasing demand of metals and the depletion of high grade
natural resources, these types of wastes are gaining great importance in the
metallurgical industries. In this study, selective leaching and leaching
kinetics of Pb and Zn from zinc extraction residue were investigated. For
this purpose; the effects of NaOH concentration, contact time, stirring speed
and temperature on the Pb and Zn recovery from the residue were studied. The
shrinking core model was applied to the results of the experiments. Leaching
results showed that 85.55% Pb and 21.3 % Zn could be leached under the
optimized conditions. The leaching of Pb and Zn were found to fit well to
shrinking core model with ash layer diffusion control. Activation energy
values for Pb and Zn leaching were calculated to be 13.645 and 22.59 kJ/mol,
respectively. |
| format | Article |
| id | doaj-art-3975dca177114979872b8fc966e94864 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-3975dca177114979872b8fc966e948642025-02-02T13:23:57ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752015-01-01511899510.2298/JMMB140503012E1450-53391500012EKinetics of Pb and Zn leaching from zinc plant residue by sodium hydroxideErdem M.0Yurten M.1Fırat University, Department of Environmental Engineering, Elazığ, TurkeyFırat University, Department of Environmental Engineering, Elazığ, TurkeyIn the hydrometallurgical zinc production processes, important amount of hazardous solid extraction residue containing unextractable Zn and Pb is generated. Due to increasing demand of metals and the depletion of high grade natural resources, these types of wastes are gaining great importance in the metallurgical industries. In this study, selective leaching and leaching kinetics of Pb and Zn from zinc extraction residue were investigated. For this purpose; the effects of NaOH concentration, contact time, stirring speed and temperature on the Pb and Zn recovery from the residue were studied. The shrinking core model was applied to the results of the experiments. Leaching results showed that 85.55% Pb and 21.3 % Zn could be leached under the optimized conditions. The leaching of Pb and Zn were found to fit well to shrinking core model with ash layer diffusion control. Activation energy values for Pb and Zn leaching were calculated to be 13.645 and 22.59 kJ/mol, respectively.http://www.doiserbia.nb.rs/img/doi/1450-5339/2015/1450-53391500012E.pdfZinc extraction residueRecoveryLeachingShrinking core model. |
| spellingShingle | Erdem M. Yurten M. Kinetics of Pb and Zn leaching from zinc plant residue by sodium hydroxide Journal of Mining and Metallurgy. Section B: Metallurgy Zinc extraction residue Recovery Leaching Shrinking core model. |
| title | Kinetics of Pb and Zn leaching from zinc plant residue by sodium hydroxide |
| title_full | Kinetics of Pb and Zn leaching from zinc plant residue by sodium hydroxide |
| title_fullStr | Kinetics of Pb and Zn leaching from zinc plant residue by sodium hydroxide |
| title_full_unstemmed | Kinetics of Pb and Zn leaching from zinc plant residue by sodium hydroxide |
| title_short | Kinetics of Pb and Zn leaching from zinc plant residue by sodium hydroxide |
| title_sort | kinetics of pb and zn leaching from zinc plant residue by sodium hydroxide |
| topic | Zinc extraction residue Recovery Leaching Shrinking core model. |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2015/1450-53391500012E.pdf |
| work_keys_str_mv | AT erdemm kineticsofpbandznleachingfromzincplantresiduebysodiumhydroxide AT yurtenm kineticsofpbandznleachingfromzincplantresiduebysodiumhydroxide |