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Sulfuric Acid Leaching of Zinc Ferrite Residue.

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Title: Sulfuric Acid Leaching of Zinc Ferrite Residue.
Authors: Lucheva, Biserka1 plasma@uctm.edu, Iliev, Peter1, Kazakova, Nadezhda1, Stefanova, Vladislava1, Ivanov, Hristo1
Source: Metalurgija. 2026, Vol. 65 Issue 1, p53-61. 9p.
Subjects: Zinc ferrites, Chemical equilibrium, Inductively coupled plasma atomic emission spectrometry, Energy dispersive X-ray spectroscopy, X-ray diffraction
Abstract: Zinc ferrite residue, a by-product from the hydrometallurgical processing of zinc calcine, contains significant amounts of zinc, iron, lead, copper, and silver, often locked in complex oxide and spinel phases. This study aims to characterize zinc ferrite residue using ICP-OES analysis, XRD, and SEM/EDS, and to evaluate its behavior during sulfuric acid leaching under controlled laboratory conditions. Thermodynamic modeling with HSC Chemistry software was used to construct Eh-pH diagrams and predict phase stability across different temperatures and redox conditions. The experimental results confirmed efficient leaching of zinc, copper and iron, while lead and silver were largely retained in the insoluble residue. These findings highlight the potential for selective zinc extraction and concentration of lead and silver in the solid phase, offering a promising route for sustainable ZFR processing. [ABSTRACT FROM AUTHOR]
Copyright of Metalurgija is the property of Croatian Metallurgical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 191623726
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Sulfuric Acid Leaching of Zinc Ferrite Residue.
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  Data: <searchLink fieldCode="AR" term="%22Lucheva%2C+Biserka%22">Lucheva, Biserka</searchLink><relatesTo>1</relatesTo><i> plasma@uctm.edu</i><br /><searchLink fieldCode="AR" term="%22Iliev%2C+Peter%22">Iliev, Peter</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kazakova%2C+Nadezhda%22">Kazakova, Nadezhda</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Stefanova%2C+Vladislava%22">Stefanova, Vladislava</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ivanov%2C+Hristo%22">Ivanov, Hristo</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Metalurgija%22">Metalurgija</searchLink>. 2026, Vol. 65 Issue 1, p53-61. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Zinc+ferrites%22">Zinc ferrites</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+equilibrium%22">Chemical equilibrium</searchLink><br /><searchLink fieldCode="DE" term="%22Inductively+coupled+plasma+atomic+emission+spectrometry%22">Inductively coupled plasma atomic emission spectrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+dispersive+X-ray+spectroscopy%22">Energy dispersive X-ray spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Zinc ferrite residue, a by-product from the hydrometallurgical processing of zinc calcine, contains significant amounts of zinc, iron, lead, copper, and silver, often locked in complex oxide and spinel phases. This study aims to characterize zinc ferrite residue using ICP-OES analysis, XRD, and SEM/EDS, and to evaluate its behavior during sulfuric acid leaching under controlled laboratory conditions. Thermodynamic modeling with HSC Chemistry software was used to construct Eh-pH diagrams and predict phase stability across different temperatures and redox conditions. The experimental results confirmed efficient leaching of zinc, copper and iron, while lead and silver were largely retained in the insoluble residue. These findings highlight the potential for selective zinc extraction and concentration of lead and silver in the solid phase, offering a promising route for sustainable ZFR processing. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Metalurgija is the property of Croatian Metallurgical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.64486/m.65.1.6
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      – Code: eng
        Text: English
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      – SubjectFull: Chemical equilibrium
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      – SubjectFull: Inductively coupled plasma atomic emission spectrometry
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      – SubjectFull: Energy dispersive X-ray spectroscopy
        Type: general
      – SubjectFull: X-ray diffraction
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              Text: 2026
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