Leaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore

Abstract An integrated hydrometallurgical process was used for the zinc leaching and purification from a zinc ore containing 9.75 wt% zinc. The zinc minerals in the ore were hemimorphite, willemite, and calcophanite. Main gangue minerals were quartz, goethite, hematite, and calcite. Central composit...

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Autores principales:	Faraz Soltani, Hossna Darabi, Reza Aram, Mahdi Ghadiri
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0ceda63d89e94a3aad5d7bf7318e24c0
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spelling	oai:doaj.org-article:0ceda63d89e94a3aad5d7bf7318e24c02021-12-02T14:01:32ZLeaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore10.1038/s41598-021-81141-72045-2322https://doaj.org/article/0ceda63d89e94a3aad5d7bf7318e24c02021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81141-7https://doaj.org/toc/2045-2322Abstract An integrated hydrometallurgical process was used for the zinc leaching and purification from a zinc ore containing 9.75 wt% zinc. The zinc minerals in the ore were hemimorphite, willemite, and calcophanite. Main gangue minerals were quartz, goethite, hematite, and calcite. Central composite design (CCD) method was used to design leaching experiments and the optimum conditions were found as follows: 30% of solid fraction, 22.05% sulphuric acid concentration, and the leaching temperature of 45 °C. The PLS containing 35.07 g/L zinc, 3.16 g/L iron, and 4.58 g/L manganese impurities was produced. A special purification process including Fe precipitation and Zn solvent extraction was implemented. The results showed that after precipitation of iron, Zn extraction of 88.5% was obtained with the 2 stages extraction system composed of 30 vol% D2EHPA as extractant. The overall Zn recovery from the ore was 71.44%. Therefore, an appropriate solution containing 16.6 g/L Zn, 0.05 g/L Fe, and 0.11 g/L Mn was prepared for the electro-winning unit without using the roasting and calcination steps (conventional method), which result in environmental pollution.Faraz SoltaniHossna DarabiReza AramMahdi GhadiriNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Faraz Soltani Hossna Darabi Reza Aram Mahdi Ghadiri Leaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore
description	Abstract An integrated hydrometallurgical process was used for the zinc leaching and purification from a zinc ore containing 9.75 wt% zinc. The zinc minerals in the ore were hemimorphite, willemite, and calcophanite. Main gangue minerals were quartz, goethite, hematite, and calcite. Central composite design (CCD) method was used to design leaching experiments and the optimum conditions were found as follows: 30% of solid fraction, 22.05% sulphuric acid concentration, and the leaching temperature of 45 °C. The PLS containing 35.07 g/L zinc, 3.16 g/L iron, and 4.58 g/L manganese impurities was produced. A special purification process including Fe precipitation and Zn solvent extraction was implemented. The results showed that after precipitation of iron, Zn extraction of 88.5% was obtained with the 2 stages extraction system composed of 30 vol% D2EHPA as extractant. The overall Zn recovery from the ore was 71.44%. Therefore, an appropriate solution containing 16.6 g/L Zn, 0.05 g/L Fe, and 0.11 g/L Mn was prepared for the electro-winning unit without using the roasting and calcination steps (conventional method), which result in environmental pollution.
format	article
author	Faraz Soltani Hossna Darabi Reza Aram Mahdi Ghadiri
author_facet	Faraz Soltani Hossna Darabi Reza Aram Mahdi Ghadiri
author_sort	Faraz Soltani
title	Leaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore
title_short	Leaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore
title_full	Leaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore
title_fullStr	Leaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore
title_full_unstemmed	Leaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore
title_sort	leaching and solvent extraction purification of zinc from mehdiabad complex oxide ore
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0ceda63d89e94a3aad5d7bf7318e24c0
work_keys_str_mv	AT farazsoltani leachingandsolventextractionpurificationofzincfrommehdiabadcomplexoxideore AT hossnadarabi leachingandsolventextractionpurificationofzincfrommehdiabadcomplexoxideore AT rezaaram leachingandsolventextractionpurificationofzincfrommehdiabadcomplexoxideore AT mahdighadiri leachingandsolventextractionpurificationofzincfrommehdiabadcomplexoxideore
_version_	1718392122268188672

Leaching and solvent extraction purification of zinc from Mehdiabad complex oxide ore

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