| 摘要 |
A cell for the electrowinning of aluminium from alumina dissolved in a fluoride-containing molten electrolyte comprises:-a horizontal carbon cathode bottom (11) protected with an aluminium-wettable surface coating (25) , the coated cathode bottom resisting corrosion and wear; -a series of plates (21) made of aluminium-wettable reticulated porous material filled with aluminium and placed flat on the aluminium-wettable surface coating (25);-a thin bottom layer of aluminium (22) between the porous aluminium filled plates and the aluminium wettable surface coating on top of the carbon cathode bottom which thin aluminium layer (22) wets the surface coating and a bottom part of the porous aluminium-filled plates (21); and-a top layer (23) of aluminium which is formed above the porous aluminium-filled plates and covered with the electrolyte.
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