Simultaneous Production of Electrolytic Manganese and Manganese Dioxide

Abstract

Abstract: Ti electrode coated with MnO₂were prepared by pre-electrolysis,Mn(NO₃)₂ pyrolysis and pyrolysis-electrolysis method respectively,and it was employed as anode for production of electrolytic manganese dioxide,in which stainless steel was used as cathode and MnSO₄-H₂SO₄ as electrolyte.The impact of current density,temperature and acidity on current efficiency was investigated.The results show that anode prepared by pyrolysis-electrolytic process is suitable with its strong passivation resistance,compact surface as well as hard adhesion between layers.Simultaneous electrolytic process for the production of electrolytic manganese and manganese dioxide were carried out successfully,in which salt bridge,porous porcelain plate and glass fabric were employed as materials for diaphragm cell,Ti-MnO₂ as anode,polished stainless steel as cathode,respectively.The electrolytic manganese was obtained at cathode and manganese dioxide at anode;the respective current efficiencies were over 90% and 60% under suitable conditions.

Key words: manganese, manganese dioxide, electrolysis

CHEN Shang, XIAO Zhuo-Bing, LIU Jian-Ben, YIN Yan-Lin. Simultaneous Production of Electrolytic Manganese and Manganese Dioxide[J]. journal6, 2009, 30(3): 86-90.

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