Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

Reductive acid leaching of spent zinc–carbon batteries and oxidative precipitation of Mn–Zn ferrite nanoparticles

Kim, T-H, Senanayake, G., Kang, J-G., Sohn, J-S., Rhee, K-I., Lee, S-W. and Shin, S-M. (2009) Reductive acid leaching of spent zinc–carbon batteries and oxidative precipitation of Mn–Zn ferrite nanoparticles. Hydrometallurgy, 96 (1-2). pp. 154-158.

Link to Published Version: http://dx.doi.org/10.1016/j.hydromet.2008.10.001
*Subscription may be required

Abstract

The non-magnetic 8-mesh undersize material obtained by crushing, magnetic separation and sieving of spent zinc-carbon batteries assayed 23.9% Mn, 14.9% Zn, and 4% Fe. Reductive acid leaching of this material at a solid/liquid ratio of 1:10, and 60 °C with 2 mol dm - 3 H 2SO 4 and 0.39 mol H 2O 2 extracted 97.9% Mn, 98.0% Zn and 55.2% Fe after 60 min. The leach liquor composition was then adjusted to a Mn:Zn:Fe molar ratio of 1:1:4 suitable for producing MnZnFe 4O 8 ferrite powder by adding Mn(II), Zn(II) and Fe(II) sulfates. The effect of pH in the range pH 5-12 on the precipitation of Mn-Zn ferrite powder was investigated over 60 min using O 2 gas flow rate of 1.3 dm 3 min - 1 at 80 °C. The precipitated Mn-Zn ferrite at pH 12 were 20 nm particles that had a spinel structure. The saturation magnetizations of Mn-Zn ferrite powder (Mn 1 - xZn xFe 2O 4) were determined to be 39-91 emu/g with various zinc contents (x = 0.2-0.8).

Item Type: Journal Article
Murdoch Affiliation(s): School of Chemical and Mathematical Science
Publisher: Elsevier BV
Copyright: © 2008 Elsevier B.V.
URI: http://researchrepository.murdoch.edu.au/id/eprint/7886
Item Control Page Item Control Page