日本金属学会誌

J. Japan Inst. Metals, Vol. 71, No. 11 (2007),
pp. 1046-1049

Decrease of Mg Content in Al-Mg Alloy by Composite Oxide from Used Dry Battery

Mikito Ueda1, Haku Ryu1, Toshiaki Ohstuka1 and Hidenori Takahashi2

1Graduate School of Engineering, Hokkaido University, Sapporo 060-8628
2Industrial Research Institute Hokkaido, Sapporo 060-0819

Abstract:

A composite oxide produced from used dry battery was used to decrease Mg content in Al-Mg alloy at high temperature. The oxide was found to consist of ZnMn2O4, ZnMnO3, and ZnO by XRD analysis. After a reaction between a pellet made from the oxide powder and the alloy in liquid at 973 K for 2 h, Mg content in the alloy decreased from 4.0 to 3.6 mass%. During the reaction, metallic Mg probably diffused into the pellet to form MgMn2O4 and then exchanged with Zn(II) in ZnMn2O4.


(Received 2007/4/23)

Keywords:

aluminum recovering, composite oxide, exchange reaction, aluminum-magnesium alloy


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