Alumina reduction process
    1.
    发明授权
    Alumina reduction process 失效
    氧化铝还原过程

    公开(公告)号:US3852173A

    公开(公告)日:1974-12-03

    申请号:US37480273

    申请日:1973-06-28

    CPC classification number: C25C3/06 C25C3/18

    Abstract: A process for producing aluminum, including electrolytically decomposing alumina to aluminum metal in an electrolyte bath between a carbon anode and a cathodic interface formed between metal and the electrolyte bath, the bath A. CONSISTING ESSENTIALLY OF Al2O3, NaF, and A1F3, and B. HAVING A WEIGHT RATIO NaF to A1F3 up to 1.1:1, WHILE MAINTAINING THE BATH AT AN OPERATING TEMPERATURE EFFECTIVE FOR PREVENTING BATH CRUSTING IN INTERFACIAL AREAS BETWEEN BATH AND ALUMINUM METAL, WHILE ENCLOSING THE TOP OF THE CELL FOR KEEPING THE SURFACE OF THE BATH MOLTEN, AND WHILE FEEDING ALUMINA A. SUBSTANTIALLY CONTINUOUSLY ONTO THE MOLTEN BATH SURFACE, B. THE ALUMINA HAVING A WATER CONTENT EFFECTIVE FOR PREVENTING ANODE DUSTING, C. THE CARBON ANODE BEING EXPOSED TO THE GASEOUS WATER EVOLVED FROM THE ALUMINA, WHEREBY ANODE DUSTING IS PREVENTED.

    Abstract translation: 一种生产铝的方法,包括在碳阳极和形成在金属和电解质浴池之间的阴极界面之间的电解液浴中将铝氧化铝电解分解成铝金属,浴A。基于Al 2 O 3,NaF和AlF 3以及B. 具有重量比NaF至A1F3至1.1:

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