Characterization of Mn-Zn Ferrite Prepared by a Hydrothermal Process From Used Dry Batteries and Waste Steel Pickling Liquor

In this study, we propose a process to prepare Mn–Zn ferrite powder, using oxides of manganese and zinc extracted from used dry batteries, and ferrous chloride solution from waste steel pickling liquor. The hydrothermal process was used to convert the starting raw materials into Mn–Zn ferrite powder...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2007-10, Vol.90 (10), p.3349-3352
Main Authors: Liu, Chung-Wen, Lin, Cheng-Hsiung, Fu, Yen-Pei
Format: Article
Language:English
Subjects:
Applied sciences
Batteries
Building materials. Ceramics. Glasses
Ceramic industries
Ceramics
Chemical industry and chemicals
Drying
Electrotechnical and electronic ceramics
Exact sciences and technology
Ferrite
Manganese
Manganese steel
Other wastes and particular components of wastes
Pickling
Pollution
Steels
Studies
Technical ceramics
Thermal expansion
Wastes
Zinc ferrites
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Summary:In this study, we propose a process to prepare Mn–Zn ferrite powder, using oxides of manganese and zinc extracted from used dry batteries, and ferrous chloride solution from waste steel pickling liquor. The hydrothermal process was used to convert the starting raw materials into Mn–Zn ferrite powder. This powder revealed the formation of cubic ferrite with a saturation magnetization (Ms) of 58.8 emu/g and an intrinsic coercive force (Hc) of 3.8 Oe. The average lattice thermal expansion coefficient αa (200°–500°C) of this Mn–Zn ferrite powder was 14.14 × 10−6 K−1. The toroidal specimen sintered at 1300°C in a controlled oxygen atmosphere presented a flat profile of initial permeability (μi) of 2150–2200, in the frequency range 0.1–20 kHz, which allows its use in magnetic applications. This useful technology, combined with environment and materials engineering, can promote the recycling of dry batteries and contribute to the preservation of the earth. Moreover, this technology can also decrease the cost of disposal of the used dried batteries and waste steel pickling liquor.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2007.01902.x