NDLI: Preparation of Mn−Zn ferrite from spent zinc-carbon batteries by alkali leaching, acid leaching and Co-precipitation

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Preparation of Mn−Zn ferrite from spent zinc-carbon batteries by alkali leaching, acid leaching and Co-precipitation

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Preparation of Mn−Zn ferrite from spent zinc-carbon batteries by alkali leaching, acid leaching and Co-precipitation

Content Provider	Springer Nature Link
Author	Kim, Tae Hyun Kang, Jin Goo Sohn, Jeong Soo Rhee, Kang In Lee, Seoung Won Shin, Shun Myung
Copyright Year	2008
Abstract	The treatment of spent zinc-carbon batteries for the recovery of valuable metals followed by conversion to Mn−Zn ferrite has been conducted employing two-stage alkali and acid leaching and co-precipitation method. In the first stage, leaching process was carried out with 4 M NaOH, which resulted in a recovery of 63.4 %Zn and 0.1% Mn. Electrowinning of alkali leaching solution containing 12.75 g/L Zn at a current density of 0.2 A/cm$^{2}$ produced Zn metal of 15 nm to 30 nm size and 99.9% purity. The second stage leaching of residue with 3 M H$_{2}$SO$_{4}$ and 6 vol.% H$_{2}$O$_{2}$ at a solid/liquid ratio of 1∶10 indicated the leaching efficiency of 98.0% Zn, 97.9% Mn and 55.2% Fe. The obtained leaching solution was finally adjusted to suitable mole ratios of Mn∶Zn∶Fe (1∶1∶4) by the addition of Zn and Fe sulfate salts followed by pH control to produce Mn−Zn ferrite powder. The characterization of the ferrite powder showed uniform nano-crystalline particles of about 20 nm size with spinel structure.
Starting Page	655
Ending Page	658
Page Count	4
File Format	PDF
ISSN	15989623
Journal	Metals and Materials
Volume Number	14
Issue Number	5
Language	English
Publisher	The Korean Institute of Metals and Materials
Publisher Date	2008-01-01
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	spent zinc-carbon battery NaOH leaching Zinc H$_{2}$SO$_{4}$ leaching Mn−Zn ferrite powder Metallic Materials Operating Procedures, Materials Treatment Magnetism, Magnetic Materials Engineering Thermodynamics, Heat and Mass Transfer Characterization and Evaluation of Materials Continuum Mechanics and Mechanics of Materials
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Condensed Matter Physics

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