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

被引：59
|
作者：
Kim, T-H. [1 ]
Senanayake, G. [4 ]
Kang, J-G. [1 ,2 ]
Sohn, J-S. [1 ]
Rhee, K-I. [1 ]
Lee, S-W. [3 ]
Shin, S-M. [1 ]
机构：
[1] Korea Inst Geosci & Mineral Resources, Minerals & Mat Proc Div, Taejon 305350, South Korea
[2] Univ Sci & Technol, Dept Resources Recycling, Taejon 305333, South Korea
[3] Chungnam Natl Univ, Dept Nano Mat, Taejon 305764, South Korea
[4] Murdoch Univ, Fac Minerals & Energy, Perth, WA 6150, Australia
来源：
HYDROMETALLURGY | 2009年 / 96卷 / 1-2期
关键词：
Zinc-carbon battery; Sulfuric acid leaching; Oxidative precipitation; Mn-Zn ferrite; RECOVERY;
D O I：
10.1016/j.hydromet.2008.10.001
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
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 degrees C with 2 mol dm(-3) H2SO4 and 0.39 mol H2O2 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 MnZnFe4O8 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 degrees 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 (Mn1-xZnxFe2O4) were determined to be 39-91 emu/g with various zinc contents (x=0.2-0.8). (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：154 / 158
页数：5
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