| 摘要 |
<p>An electrolytic cell (10) for reduction of a metal oxide to a metal and oxygen has an inert anode (29a,b,c) and an upwardly angled roof (40) covering the inert anode. The angled roof diverts oxygen bubbles into an upcomer channel (34), thereby agitating a molten salt bath in the upcomer channel and improving dissolution of a metal oxide in the molten salt bath. The molten salt bath has a lower velocity adjacent the inert anode in order to minimize corrosion by substances in the bath. A particularly preferred cell produces aluminum by electrolysis of alumina in a molten salt bath containing aluminum fluoride and sodium fluoride.</p> |
