| 摘要 |
An electrolytic cell for producing primary aluminum by using inert anodes is disclosed, in which an electrolyte system KF-NaF-AlF3 is used and the operating temperature of the cell is 700-850°C. The electrolytic cell comprises cell shell, heat insulating refractory lining, melting pot, heat insulating cover, inert electrodes, electrode stems, anode bus-bars, cathode bus-bars, anode branching bus-bars, heat insulating plates, partitions between anodes and cathodes and feeding device. The quality of the aluminum product obtained by using the electrolytic cell is not less than 99.7%. The cell is free from emission of carbon dioxide and perfluorinated compounds (PFCs), and hardly has consumption of electrodes, so the distances between anodes and cathodes can be kept stable. The cell is sealed and the volatilization of dust and fluorides can be prevented, and it is useful to recover oxygen gas. The electrolytic cell has good heat insulation effect, increased heat efficiency, reduced heat loss, increased space utilization rate and increased capacity in unit volume or unit floor space of the cell. The electrolytic cell is free of tank leakage, and it has long service life and flexible design for cell structure. |
