Recovery of Valuable Metals from Spent Alkaline Manganese Batteries using Sulfuric Acid

폐알카리 망간전지로부터 황산을 이용한 유가금속 회수

  • Shin, Shun-Myung (Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division) ;
  • Kang, Jin-Gu (Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division) ;
  • Sohn, Jeong-Soo (Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division) ;
  • Yang, Dong-Hyo (Korea Institute of Geoscience & Mineral Resources, Minerals and Materials Processing Division)
  • 신선명 (한국지질자원연구원 자원활용소재연구부 금속회수연구실) ;
  • 강진구 (한국지질자원연구원 자원활용소재연구부 금속회수연구실) ;
  • 손정수 (한국지질자원연구원 자원활용소재연구부 금속회수연구실) ;
  • 양동효 (한국지질자원연구원 자원활용소재연구부 금속회수연구실)
  • Received : 2006.07.25
  • Accepted : 2006.08.23
  • Published : 2006.10.10

Abstract

The leaching behaviors of zinc and manganese oxides of spent alkaline manganeses battery in sulfuric acid solution by using $H_{2}O_{2}$ as a reducing agent were investigated according to the concentration of $H_{2}SO_{4}$, temperature, reaction time, and the amount of $H_{2}O_{2}$. The experimental results of zinc and manganeses dissolution rates obtained without a reducing agent at 100 g/L solid/liquid ratio, 3.0 M $H_{2}SO_{4}$, $60^{\circ}C$ and 200 r.p.m. were 97.7% and 43.5%, respectively. On the other hand, zinc and manganeses dissolution rates obtained by adding 30 mL reducing agent at $60^{\circ}C$ were 99.6% and 97.1%, respectively. The addition of the reducing agent increased the leaching of manganese by two-fold compared to the absence of a reducing agent. In case of adding over 30 mL $H_{2}O_{2}$, however, the leaching rates of zinc and manganeses were independent of reducing agent amounts.

Keywords

leaching behavior;spent alkaline manganeses battery;sulfuric acid;$H_{2}O_{2}$;zinc and manganeses

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