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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 3    No. 4    December 1993

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ALUMINIUM ELECTROLYSIS AT 800~900℃—A NEW APPROACH TO ENERGY SAVINGS
Qiu  Zhuxian ; He  Minghong ; Li  Qingfeng

Northeastern University; Shenyang 110006; China

Abstract:The freezing points of cryolite-alumina melts with the addition of AIF3,CaF2,MgF2 and LiF were measured.It was found that there was a wide range of lower freezing points below 800℃.Various physico-chemical and electro-chemical properties at 30℃ above the correspond- ing freezing points were measured.Current efficiences in a laboratory bench scale 100A cell were high(85~90% at 800~900 C),was low.It is assumed thataluminium electrolysis may be carried out at 800~900 C with lower energy consumption.

 

Key words: aluminum electrolysis; lower temperature; energy consumption

ISSN 1672-7029
CN 43-1423/U

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